Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
107828561Factored
FactorDigitsBitsDate
197781184145916026122771437513037919937120.62020-08-17 19:53:23
P-1 factors
DateFactorB1B2
2020-08-17197781184145916026122771437513037919984500016266250
History
DateUserTypeResult
2020-08-17proxy2222F-PM1
Factor: 1977811841459160261227714375130379199 / (P-1, B1=845000, B2=16266250)
2020-04-26TheJudgerNF
no factor from 2^76 to 2^77
2020-04-26TheJudgerNF
no factor from 2^75 to 2^76
2020-04-26TheJudgerNF
no factor from 2^74 to 2^75
2020-02-03Niels_Mache_NextcloudNF
no factor from 2^73 to 2^74
2020-02-03Niels_Mache_NextcloudNF
no factor from 2^72 to 2^73
2015-02-15workerthreadNF
no factor from 2^71 to 2^72
2013-10-01PascalBieriNF
no factor from 2^70 to 2^71
2013-09-29PascalBieriNF
no factor from 2^69 to 2^70
2013-09-25PascalBieriNF
no factor from 2^68 to 2^69
2013-09-24PascalBieriNF
no factor from 2^67 to 2^68
2013-09-21shengNF
no factor from 2^66 to 2^67
2012-05-19omiXorpNF
no factor from 2^65 to 2^66
2010-09-08oilwarzonedotcomNF
no factor from 2^64 to 2^65
2010-04-25Torchwood InstituteNF
no factor from 2^63 to 2^64