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
103862861Factored
FactorDigitsBitsDate
2821701587011036993147548975240132104.52020-08-22 03:46:14
P-1 factors
DateFactorB1B2
2020-08-222821701587011036993147548975240182000015990000
History
DateUserTypeResult
2020-08-22Sergey NosovF-PM1
Factor: 28217015870110369931475489752401 / (P-1, B1=820000, B2=15990000, E=6)
2020-08-11ChuckNF
no factor from 2^76 to 2^77
2020-08-09Bill StaffenNF
no factor from 2^75 to 2^76
2020-08-09Bill StaffenNF
no factor from 2^74 to 2^75
2019-08-27Niels_Mache_NextcloudNF
no factor from 2^73 to 2^74
2019-08-27Niels_Mache_NextcloudNF
no factor from 2^72 to 2^73
2014-12-30SMoffatNF
no factor from 2^71 to 2^72
2013-09-20RobishNF
no factor from 2^70 to 2^71
2013-09-17RobishNF
no factor from 2^69 to 2^70
2013-09-10RobishNF
no factor from 2^68 to 2^69
2013-09-05RobishNF
no factor from 2^67 to 2^68
2013-09-02RobishNF
no factor from 2^66 to 2^67
2012-05-02omiXorpNF
no factor from 2^65 to 2^66
2010-10-24Torchwood InstituteNF
no factor from 2^64 to 2^65
2010-04-17James HintzNF
no factor from 2^63 to 2^64