R. Henrik Nilsson, Ph. D.
Name: R. Henrik Nilsson
Position: Associate professor (docent)
Address: University of Gothenburg, Department of Biological and Environmental Sciences, Box 461, 405 30 Göteborg, Sweden
Phone: +46-31-7862623
Fast lane: henrik dot nilsson at bioenv dot gu dot se
Fungal research interests: systematics, agaricomycetes, cantharelloid clade, Sistotrema, mycorrhiza, environmental sequencing
Computational research interests: bioinformatics, phylogenetic inference, sequence databases, sequence analysis,
Linux/BSD, barcoding, molecular identification, next-generation sequencing, metagenomics
Journal associations: Frontiers in Evolutionary and Population Genetics (editorial board)
Mycokeys (editorial board)
Review assignments: Systematic Biology ; Molecular Biology and Evolution ; Genome Biology ; Molecular Ecology ; New Phytologist
The ISME Journal ; Molecular Phylogenetics and Evolution ; FEMS Microbiology Ecology ; Bioinformatics ; Gene
FEMS Microbiology Letters ; Molecular Biotechnology ; BMC Genomics ; Cladistics ; BMC Evolutionary Biology
Fungal Genetics and Biology ; BMC Microbiology ; Microbial Ecology ; Applied and Environmental Microbiology
Soil Biology and Biochemistry ; BMC Bioinformatics ; Mycological Research / Fungal Biology ; BMC Ecology ; Mycorrhiza
Ecology and Evolution ; Mycologia ; Evolutionary Bioinformatics ; PLoS ONE ; Bioinformatics and Biology Insights
Frontiers in Evolutionary and Population Genetics ; Antonie van Leeuwenhoek ; Mycological Progress ; Canadian Journal of Microbiology
Fungal Ecology ; Central European Journal of Biology ; TAXON ; Anales del Real Jardín Botánico de Madrid ; Folia Microbiologica
African Journal of Agricultural Research ; Mycology ; Zoologica Scripta ; Bionomina ; African Journal of Microbiology Research
Environmental Microbiology Reports ; International Journal of Plant and Soil Science ; Canadian Journal of Forest Research ; Silva Fennica
African Journal of Biotechnology ; Journal of the Botanical Research Institute of Texas ; African Journal of Plant Science
Awards: Albert Wallins Vetenskapspris (2011; Kungliga Vetenskaps- och Vitterhets-Samhället i Göteborg / The Royal Society of Arts and Sciences in Gothenburg)
Thesis: Fungal taxonomy and systematics in the digital era, with an outlook on the cantharelloid clade (Basidiomycota).
(ISBN 978-91-85529-10-0; defended June 8, 2007; opponent: Pedro W. Crous).
h-index: 25 (Google Scholar page)
-> Selected publications <-
- Kõljalg U, Nilsson RH, Abarenkov K, Tedersoo L, Taylor AFS, Bahram M, Bates ST, Bruns TT, Bengtsson-Palme J,
Callaghan TM, Douglas B, Drenkhan T, Eberhardt U, Dueñas M, Grebenc T, Griffith GW, Hartmann M, Kirk PM, Kohout P,
Larsson E, Lindahl BD, Lücking R, Martín MP, Matheny PB, Nguyen NH, Niskanen T, Oja J, Peay KG, Peintner U,
Peterson M, Põldmaa K, Saag L, Saar I, Schüßler A, Senés C, Smith ME, Suija A, Taylor DE, Telleria MT, Weiß M,
Larsson KH. 2013. Towards a unified paradigm for sequence-based identification of Fungi. Molecular Ecology (in press).
- Bengtsson-Palme J, Ryberg M, Hartmann M, Branco S, Wang Z, Godhe A, De Wit P, Sánchez-García M, Ebersberger M,
de Sousa F, Amend A, Jumpponen A, Unterseher M, Kristiansson E, Abarenkov K, Bertrand YJK, Sanli K, Eriksson MK,
Vik U, Veldre V, Nilsson RH. 2013. Improved software detection and extraction of ITS1 and ITS2 from ribosomal
ITS sequences of fungi and other eukaryotes for analysis of environmental sequencing data.
Methods in Ecology and Evolution (in press) software site
- Hyde KD, Udayanga D, Manamgoda DS, Tedersoo L, Larsson E, Abarenkov K, Bertrand YJK, Oxelman B, Hartmann M,
Kauserud H, Ryberg M, Kristiansson E, Nilsson RH. 2013. Incorporating molecular data in fungal systematics:
a guide for aspiring researchers. Current Research in Environmental and Applied Mycology 3: 1-32. open access
- Nilsson RH, Tedersoo L, Abarenkov K, Ryberg M, Kristiansson E, Hartmann M, Schoch CL, Nylander JAA, Bergsten J,
Porter TM, Jumpponen A, Vaishampayan P, Ovaskainen O, Hallenberg N, Bengtsson J, Eriksson KM, Larsson K-H,
Larsson E. 2012. Five simple guidelines for establishing basic authenticity and reliability of newly generated
fungal ITS sequences. MycoKeys 4: 37-63. open access
- Nilsson RH, Tedersoo L, Lindahl BD, Kjøller R, Carlsen T, Quince C, Abarenkov K, Pennanen T, Stenlid J,
Bruns T, Larsson K-H, Kõljalg U, Kauserud H. 2011. Towards standardization of the description and publication
of next-generation sequencing datasets of fungal communities. New Phytologist 191: 314-318.
- Hartmann M, Howes CG, Abarenkov K, Mohn WW, Nilsson RH. 2010. V-Xtractor: An open-source, high-throughput
software tool to identify and extract hypervariable regions of small subunit (16S/18S) ribosomal RNA gene sequences.
Journal of Microbiological Methods 83: 250-253. software homepage
- Nilsson RH, Ryberg M, Abarenkov K, Sjökvist E, Kristiansson E. 2009. The ITS region as a target for characterization
of fungal communities using emerging sequencing technologies. FEMS Microbiology Letters 296: 97-101.
Cited more than 50 times
- Nilsson RH, Kristiansson E, Ryberg M, Hallenberg N, Larsson K-H. 2008. Intraspecific ITS variability
in the kingdom Fungi as expressed in the international sequence databases and its implications for
molecular species identification. Evolutionary Bioinformatics 4: 193-201. open access
Cited more than 180 times
- Nilsson RH, Ryberg M, Kristiansson E, Abarenkov K, Larsson K-H, Kõljalg U. 2006. Taxonomic reliability
of DNA sequences in public sequence databases: a fungal perspective. PLoS ONE 1: e59. open access
Cited more than 160 times
- Hibbett DS, Nilsson RH, Snyder M, Fonseca M, Costanzo J, Shonfeld M. 2005. Automated phylogenetic
taxonomy: an example in the homobasidiomycetes. Systematic Biology 54: 660-668.
Cited more than 40 times As covered in Science
- Kõljalg U*, Larsson K-H*, Abarenkov K*, Nilsson RH*, Alexander IJ, Eberhardt U, Erland S, Høiland K,
Kjøller R, Larsson E, Pennanen T, Sen R, Taylor AFS, Tedersoo L, Vrålstad T, Ursing BM. 2005.
UNITE: a database providing web-based methods for the molecular identification of ectomycorrhizal
fungi. New Phytologist 166: 1063-1068. * = equal contribution
Cited more than 230 times
-> Other publications <-
- Lindner DL, Carlsen T, Nilsson RH, Davey M, Schumacher T, Kauserud H. 2013. Employing 454 amplicon pyrosequencing to
reveal intragenomic divergence in the internal transcribed spacer (ITS) rDNA region in fungi. Ecology and Evolution 3: 1751-1764.
open access
- Lindahl BD, Nilsson RH, Tedersoo L, Abarenkov K, Carlsen T, Kjöller R, Koljalg U, Pennanen T, Rosendahl S, Stenlid J, Kauserud H.
2013. Fungal community analysis by high-throughput sequencing of amplified markers - a user's guide. New Phytologist 199: 288-299.
open access
- Kerekes J, Kaspari M, Stevenson B, Nilsson RH, Hartmann M, Amend A, Bruns TD. 2013. Nutrient enrichment increased
species richness of leaf litter fungal assemblages in a tropical forest. Molecular Ecology 22: 2827-2838.
- Bates ST, Ahrendt S, Bik HM, Bruns TD, Caporaso JG, Cole J, Dwan M, Fierer N, Gu D, Houston S, Knight R, Leff J, Lewis C,
Maestre JP, McDonald D, Nilsson RH, Porras-Alfaro A, Robert V, Schoch C, Scott J, Taylor DL, Wegener Parfrey L, Stajich JE.
2013. Meeting Report: Fungal ITS Workshop (October 2012). Standards in Genomics Sciences 8: 118-123. open access
- Bengtsson-Palme J, Hartmann M, Eriksson KM, Nilsson RH. 2013. Metaxa, overview. In: Nelson K. (Ed.) Encyclopedia of Metagenomics.
Springer-Verlag Berlin Heidelberg. [book chapter/dictionary entry]
- Hallenberg N, Nilsson RH, Robledo G. 2013. Species complexes in Hericium (Russulales, Agaricomycota) and a new species
- Hericium rajchenbergii - from southern South America. Mycological Progress 12: 413-420.
- Blaalid R, Kumar S, Nilsson RH, Abarenkov K, Kirk PM, Kauserud H. 2013. ITS1 versus ITS2 as DNA metabarcodes for fungi.
Molecular Ecology Resources 13: 218-224.
- Hartmann M, Howes CG, VanInsberghe D, Yu H, Bachar D, Christen R, Nilsson RH, Hallam SJ, Mohn WW. 2012. Significant and
persistent impact of timber harvesting on soil microbial communities in northern coniferous forests. The ISME Journal 6: 2199-2218.
- Bengtsson J, Hartmann M, Unterseher M, Vaishampayan P, Abarenkov K, Durso L, Bik EM, Garey JR, Eriksson KM, Nilsson RH.
2012. Megraft: a software package to graft ribosomal small subunit (16S/18S) fragments onto full-length sequences for
accurate species richness and sequencing depth analysis in pyrosequencing-length metagenomes and similar environmental
datasets. Research in Microbiology 163: 407-412. open access
- La Duc MT, Vaishampayan P, Nilsson RH, Torok T, Venkateswaran K. 2012. Pyrosequencing-derived bacterial, archaeal,
and fungal diversity of spacecraft hardware destined for Mars. Applied and Environmental Microbiology 78: 5912-5922.
- Orgiazzi A, Lumini E, Nilsson RH, Girlanda M, Vizzini A, Bonfante P, Bianciotto V. 2012. Unravelling soil fungal
communities from different Mediterranean land-use backgrounds. PLoS ONE 7: e34847. open access
- Schoch CL, Seifert KA, Huhndorf S, Robert V, Spouge JL, Levesque CA, Chen W, ..., Nilsson RH, ..., Schindel D. 2012.
Nuclear ribosomal internal transcribed spacer (ITS) region as a universal DNA barcode marker for Fungi.
Proceedings of the National Academy of Sciences USA 109: 6241-6246. open access
Cited more than 30 times
- Münzenberger B, Schneider B, Nilsson RH, Bubner B, Larsson K-H, Hüttl RF. 2012. Morphology, anatomy, and molecular
studies of the ectomycorrhiza formed axenically by the fungus Sistotrema sp. (Basidiomycota). Mycological Progress 11: 817-826.
- Xu L, Ravnskov S, Larsen J, Nilsson RH, Nicolaisen M. 2012. Soil fungal community structure along a soil
health gradient in pea fields examined using deep amplicon sequencing. Soil Biology and Biochemistry 46: 26-32.
- Tedersoo L, Abarenkov K, Nilsson RH, Schussler A, Grelet G-A, Kohout P, Oja J, Bonito GM, Veldre V, Jairus T,
Ryberg M, Larsson K-H, Kõljalg U. 2011. Tidying up International Nucleotide Sequence Databases: ecological, geographical,
and sequence quality annotation of ITS sequences of mycorrhizal fungi. PLoS ONE 6: e24940.
- Ryberg M, Nilsson RH, Matheny PB. 2011. DivBayes and SubT: exploring species diversification using Bayesian statistics.
Bioinformatics 27: 2439-2440.
- Bengtsson J, Eriksson KM, Hartmann M, Wang Z, Shenoy BD, Grelet G-A, Abarenkov K, Petri A, Alm Rosenblad M,
Nilsson RH. 2011. Metaxa: a software tool for automated detection and discrimination among ribosomal small subunit
(12S/16S/18S) sequences of archaea, bacteria, eukaryotes, mitochondria, and chloroplasts in metagenomes and environmental
sequencing datasets. Antonie van Leeuwenhoek 100: 471-475 software homepage
- Hartmann M, Howes CG, Veldre V, Schneider S, Vaishampayan PA, Yannarell AC, Quince C, Johansson P,
Björkroth KJ, Abarenkov K, Hallam SJ, Mohn WW, Nilsson RH. 2011. V-RevComp: Automated high-throughput
detection of reverse complementary 16S ribosomal RNA gene sequences in large environmental and taxonomic
datasets. FEMS Microbiology Letters 319: 140-145. software homepage
- Wang Z, Nilsson RH, Lopez-Giraldez F, Zhuang W-Y, Dai Y-C, Johnston PR, Townsend JP. 2011. Tasting soil fungal
diversity with earth tongues: phylogenetic test of SATe alignments for environmental ITS data. PLoS ONE 6: e19039.
- Hibbett DS, Ohman A, Glotzer D, Nuhn M, Kirk P, Nilsson RH. 2011. Progress in molecular and morphological taxon
discovery in Fungi and options for formal classification of environmental sequences. Fungal Biology Reviews 25: 38-47.
[review article] open access Cited more than 40 times
- Nilsson RH, Veldre V, Wang Z, Eckart M, Branco S, Hartmann M, Quince C, Godhe A, Bertrand Y, Alfredsson JF,
Larsson K-H, Kõljalg U, Abarenkov K. 2011. A note on the incidence of reverse complementary fungal ITS sequences
in the public sequence databases and a software tool for their detection and reorientation. Mycoscience 52: 278-282.
- Nilsson RH, Ryberg M, Sjökvist E, Abarenkov K. 2011. Rethinking taxon sampling in the light of environmental
sequencing. Cladistics 27: 197-203.
- Nilsson RH, Abarenkov K, Larsson K-H, Kõljalg U. 2011. Molecular identification of fungi: rationale, philosophical
concerns, and the UNITE database. Open Applied Informatics Journal 5: 81-86. [review article] open access
- Abarenkov K, Tedersoo L, Nilsson RH, Vellak K, Saar I, Veldre V, Parmasto E, Prous M, Aan A, Ots M, Kurina O,
Ostonen I, Jõgeva J, Halapuu S, Põldmaa K, Toots M, Truu J, Larsson K-H, Kõljalg U. 2010. PlutoF - a web-based
workbench for ecological and taxonomical research, with an online implementation for fungal ITS sequences.
Evolutionary Bioinformatics 6: 189-196.
Cited more than 20 times
- Ghobad-Nejhad M, Nilsson RH, Hallenberg N. 2010. Phylogeny and taxonomy of the genus Vuilleminia (Basidiomycota)
based on molecular and morphological evidence, with new insights into the Corticiales. TAXON 59: 1519-1534.
- Nilsson RH, Abarenkov K, Veldre V, Nylinder S, De Wit P, Brosche S, Alfredsson JF, Ryberg M, Kristiansson E. 2010.
An open source chimera checker for the fungal ITS region. Molecular Ecology Resources 10: 1076-1081.
Cited more than 20 times
- Nilsson RH, Veldre V, Hartmann M, Unterseher M, Amend A, Bergsten J, Kristiansson E, Ryberg M, Jumpponen A,
Abarenkov K. 2010. An open source software package for automated extraction of ITS1 and ITS2 from fungal ITS
sequences for use in high-throughput community assays and molecular ecology. Fungal Ecology 3: 284-287.
Cited more than 20 times
- Tedersoo L*, Nilsson RH*, Abarenkov K, Jairus T, Sadam A, Saar I, Bahram M, Bechem E, Chuyong G, Kõljalg U. 2010.
454 Pyrosequencing and Sanger sequencing of tropical mycorrhizal fungi provide similar results but reveal
substantial methodological biases. New Phytologist 188: 291-301. * = equal contribution
Cited more than 70 times
- Begerow D, Nilsson RH, Unterseher M, Maier W. 2010. Current state and perspectives of fungal DNA barcoding
and rapid identification procedures. Applied Microbiology and Biotechnology 87: 99-108. [review article]
Cited more than 60 times
- Abarenkov K, Nilsson RH, Larsson K-H, Alexander IJ, Eberhardt U, Erland S, Høiland K, Kjøller R, Larsson E,
Pennanen T, Sen R, Taylor AFS, Tedersoo L, Ursing BM, Vrålstad T, Liimatainen K, Peintner U, Kõljalg U. 2010.
The UNITE database for molecular identification of fungi - recent updates and future perspectives.
New Phytologist 186: 281-285.
Cited more than 50 times
- Wu S-H, Nilsson RH, Chen C-T, Yu S-Y, Hallenberg N. 2010. The white-rotting genus Phanerochaete is polyphyletic
and distributed throughout the phleboid clade of the Polyporales (Basidiomycota). Fungal Diversity 42: 107-118.
- Buée M, Reich M, Murat C, Morin E, Nilsson RH, Uroz S, Martin F. 2009. 454 pyrosequencing analyses of
forest soils reveal an unexpectedly high fungal diversity. New Phytologist 184: 449-456.
Cited more than 160 times
- Eriksson KM, Antonelli A, Nilsson RH, Clarke AK, Blanck H. 2009. A phylogenetic approach to detect selection
on the target site of the antifouling compound irgarol in tolerant periphyton communities.
Environmental Microbiology 11: 2065-2077.
- Nilsson RH, Bok G, Ryberg M, Kristiansson E, Hallenberg N. 2009. A software pipeline for processing and
identification of fungal ITS sequences. Source Code in Biology and Medicine 4: 1. open access
Cited more than 30 times
- Ryberg M, Kristiansson E, Sjökvist E, Nilsson RH. 2009. An outlook on the fungal internal transcribed spacer
sequences in GenBank and the introduction of a web-based tool for the exploration of fungal diversity.
New Phytologist 181: 471-477.
Cited more than 40 times
- Bidartondo M, ..., Nilsson RH et al. 2008. Preserving accuracy in GenBank. Science 319: 1616 (Letter to Science).
Cited more than 60 times
- Hallenberg N, Ryberg M, Nilsson RH, Wood AR, Wu S-H. 2008. Pseudolagarobasidium (Basidiomycota): on the
reinstatement of a genus of parasitic, saprophytic, and endophytic resupinate fungi. Botany 86: 1319-1325.
- Bienert GP, Thorsen M, Schuessler MD, Nilsson RH, Wagner A, Tamas MJ, Jahn TP. 2008. A subgroup of plant
aquaporins facilitate the bi-directional diffusion of As(OH)3 and Sb(OH)3 across membranes. BMC Biology 6: 26.
open access Cited more than 90 times
- Ryberg M, Nilsson RH, Kristiansson E, Topel M, Jacobsson S, Larsson E. 2008. Mining metadata from
unidentified ITS sequences in GenBank: a case study in Inocybe (Basidiomycota). BMC Evolutionary Biology 8:50.
open access Cited more than 40 times
- Hallenberg N, Nilsson RH, Antonelli A, Wu S-H, Maekawa N, Nordén B. 2007. The Peniophorella praetermissa
species complex (Basidiomycota). Mycological Research 111: 1366-1376.
- Paulus B, Nilsson RH, Hallenberg N. 2007. Phylogenetic studies in Hypochnicium (Basidiomycota),
with special emphasis on species from New Zealand. New Zealand Journal of Botany 45: 139-150.
- Matheny PB, Wang Z, Binder M, Curtis JM, Lim YW, Nilsson RH, Hughes KW, Hofstetter V, Ammirati JF,
Schoch C, Langer E, Langer G, McLaughlin DJ, Wilson AW, Froslev T, Ge ZW, Kerrigan RW, Kerrigan R,
Slot J, Yang Z-L, Baroni TJ, Fischer M, Hosaka K, Matsuura K, Seidl M, Vauras J, Hibbett DS. 2007.
Contributions of rpb2 and tef1 to the phylogeny of mushrooms and allies (Basidiomycota, Fungi).
Molecular Phylogenetics and Evolution 43: 430-451. Cited more than 80 times
- Nilsson RH, Larsson K-H, Larsson E, Kõljalg U. 2006. Fruiting-body guided molecular identification of
root-tip mantle mycelia provides strong indications of ectomycorrhizal associations in two species of
Sistotrema (Basidiomycota). Mycological Research 110: 1426-1432.
- Moncalvo J-M, Nilsson RH, Koster B, Dunham SM, Bernauer T, Matheny PB, McLenon T,
Margaritescu S, Weiss M, Garnica S, Danell E, Langer E, Langer G, Larsson E, Larsson K-H,
Vilgalys R. 2006. The cantharelloid clade: dealing with incongruent gene trees and phylogenetic
reconstruction methods. Mycologia 98: 937-948. Cited more than 60 times
- Aime MC, Matheny PB, Henk DA, Frieders EM, Nilsson RH, Piepenbring M, McLaughlin DJ, Szabo LJ,
Begerow D, Sampaio JP, Bauer R, Weiss M, Oberwinkler F, Hibbett DS. 2006. An overview of the
higher-level classification of Pucciniomycotina based on combined analyses of nuclear large and
small subunit rDNA sequences. Mycologia 98: 896-905. Cited more than 40 times
- Nilsson RH, Kristiansson E , Ryberg M, Larsson K-H. 2005. Approaching the taxonomic affiliation of
unidentified sequences in public databases – an example from the mycorrhizal fungi.
BMC Bioinformatics 6: 178. open access emerencia online Cited more than 40 times
- Parmasto E, Nilsson RH, Larsson K-H. 2004. Cortbase version 2 - extensive updates of a nomenclatural
database for corticioid fungi (Hymenomycetes). Phyloinformatics 1: 5. open acccess As covered in Science
Cited more than 20 times
- Nilsson RH, Rajashekar B, Larsson K-H, Ursing BM. 2004. galaxieEST: addressing EST identity through
automated phylogenetic analysis. BMC Bioinformatics 5: 87. open access
- Nilsson RH, Larsson K-H, Ursing B. 2004. galaxie - CGI scripts for sequence identification through
automated phylogenetic analysis. Bioinformatics 20: 1447-1452. Cited more than 20 times
- Nilsson RH, Hallenberg N, Norden B, Maekawa N, Wu S.-H. 2003. Phylogeography of Hyphoderma setigerum
(Basidiomycota) in the Northern Hemisphere. Mycological Research 107: 645-652.
- Nilsson RH, Hallenberg N. 2003. Phylogeny of the Hypochnicium punctulatum complex as inferred from ITS
sequence data. Mycologia 95: 54-60.
-> Popular science and non-reviewed papers<-
- Nilsson RH. 2007. Mellan myensk och myling - några trender inom svampforskningen. Magasin Brun 6: 10-14.
- Nilsson RH. 2007. Något är konstigt i kantarellgruppen. Puggehatten 20: 2-4.
- Nilsson RH. 2007-2011. Various contributions to the Swedish Wikipedia pages, mainly on mycology, systematics,
and taxonomy.
-> Less related <-
- Nilsson RH. 2013. 978847155 * 2^1123391-1 - a new prime of 338 184 digits (the world's 3151th largest prime as of September 13, 2013).
- Nilsson RH. 2012. 978847155 * 2^1024053-1 - a new prime of 308 280 digits (the world's 1693th largest prime as of August 8, 2012).
- Nilsson RH. 2011. 978847155 * 2^942278-1 - a new prime of 283 663 digits (the world's 1155th largest prime as of September 15, 2011).
- Nilsson RH. 2011. 978847155 * 2^900770-1 - a new prime of 271 168 digits (the world's 952th largest prime as of March 23, 2011).
- Nilsson RH. 2010. 978847155 * 2^855371-1 - a new prime of 257 502 digits (the world's 837th largest prime as of November 3, 2010).
- Nilsson RH. 2009. 978847155 * 2^638344-1 - a new prime of 192 170 digits (the world's 1345th largest prime as of June 30, 2009).
- Nilsson RH, Yamada S. 2009. 112919520*2^350008-1 - a new prime of 105 371 digits. Through the SIGPS project.
- Nilsson RH, Yamada S. 2009. 98504246^16384+1 and 98503336^16384+1 - two new generalized Fermat primes of 130965 digits each
(the 4022th and 4023th largest primes as of May 13, 2009). Through the SIGPS project.
- Nilsson RH. 2009. 978847155 * 2^603383-1 - a new prime of 181 646 digits (the world's 1360th largest prime as of April 15, 2009).
- Nilsson RH, Yamada S. 2009. 98475208^16384+1 and 98473506^16384+1 - two new generalized Fermat primes of 130963 digits each
(the 3458th and 3459th largest primes as of April 10, 2009). Through the SIGPS project.
- Nilsson RH. 2009. 7113920990529996490449608242781773 - a new 34-digit factor of a number of the form x^y + y^x (x=146, y=39, P34 * C160).
Through the XYYX project.
- Nilsson RH. 2009. 107360611828005050854420395187722811 - a new 36-digit factor of a number of the form x^y + y^x (x=135, y=121, P36 * P193).
Through the XYYX project.
- Nilsson RH, Yamada S. 2009. Numerous new large generalized Fermat divisor PRPs (list). Through the SIGPS project.
- Nilsson RH, Yamada S. 2009. 102623730 * 2^350008-1 - a new prime of 105 371 digits. Through the SIGPS project.
- Nilsson RH. 2008. 978847155 * 2^561111-1 - a new prime of 168 921 digits (the world's 1077th largest prime as of June 10, 2008).
(my largest prime numbers are indexed at the top 5000 primes list.
- Nilsson RH. 2008. 978847155 * 2^533895-1 - a new prime of 160 728 digits (the world's 1105th largest prime as of March 26, 2008).
- Nilsson RH. 2008. 978847155 * 2^529577-1 - a new prime of 159 428 digits (the world's 1108th largest prime as of March 13, 2008).
- Nilsson RH. 2007. 978847155 * 2^446715-1 - a new prime of 134 484 digits (the world's 1226th largest prime as of June 29, 2007).
- Nilsson RH. 2007. 978847155 * 2^429357-1 - a new prime of 129 259 digits (the world's 1335th largest prime as of May 31, 2007).
- Nilsson RH. 2007. 978847155 * 2^400352-1 - a new prime of 120 527 digits (the world's 1448th largest prime as of March 2, 2007).
- Nilsson RH. 2007. 978847155 * 2^382902-1 and 978847155 * 2^381039-1: new primes of more than 110 000 digits (the world's
1614th and 1642th largest primes as of February 8 and 5, 2007).
- Nilsson RH. 2006. More primes of the form 15k * 2^n-1. Through the 15k.org project.
- Nilsson RH. 2005. New primes of the form 15k * 2^n-1 - some too small to be indexed. Through the 15k.org project.
- Nilsson RH. 2004. Some new primes of the form 15k * 2^n-1. Through the 15k.org project.
- Nilsson RH. 2004. Some new factors of numbers of the form k * 2^n+-1. Through the k * 2^n+-1 project.
- Nilsson RH, Pulkkinen MAS. 2003. 33616218135121889904001 - a new divisor of M3326400, M37800, and 2^18900+1.
Through the ElevenSmooth project.
- Nilsson RH and Pulkkinen MAS. 2003. 22988509871279248951201 - a new divisor of M3326400 and M8400. Through the ElevenSmooth project.
- Nilsson RH. 2003. 1489091294332340899201 - a new divisor of M3326400 and 415800. Through the ElevenSmooth project.
- Nilsson RH. 2003. 10400423476871101020265601 - a new 26 digit factor of M3326400, M17600, and 2^8800+1. Through
the ElevenSmooth project.
- Nilsson RH. 2003. 3218581070622527887201 - a new factor of 2^46200+1, M92400, and M3326400. Through the ElevenSmooth project.
- Nilsson RH and Nilsson MI. 2002. Two new primes of the form k * 2^n+1: (k=497, n=86135, 25932 dgs; k=493, n=81776, 24620 dgs).
Through the Prothsearch.net initiative.
This webpage does not comply with the suggested graphical profile of University of Gothenburg employees.
Any and all opinions expressed on this webpage are those of its author (R. Henrik Nilsson) and not necessarily those of
University of Gothenburg.
Last update: September 10, 2013.