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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Exponent Range:










MnStatusDetails
31977571Factored
FactorDigitsBitsDate
4997573968729950273611223383092236061738125.22021-08-20 04:07:15
LL
StatusDateUserResidueShift
Verified (Factored)2006-11-28Keith Jobe6386BF6A538FE68A615085
Verified (Factored)2014-08-29linament6386BF6A538FE68A24455517
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-01-25Dobri6CA8E5E5BA773A5D1315053553
P-1 factors
DateFactorB1B2
2021-08-2049975739687299502736112233830922360617100000030000000
History
DateUserTypeResult
2023-01-25Ben DeloCERT
PRP Certification
Proof certified good
2023-01-25DobriC-PRP
M31977571/49975739687299502736112233830922360617 : 6CA8E5E5BA773A5D
PRP proof power = 9
PRP: Verified
Proof certified good
2021-08-20Sid & AndyF-PM1
Factor: 49975739687299502736112233830922360617 / (P-1, B1=1000000, B2=30000000)
2020-03-27-Anonymous-NF
no factor from 2^73 to 2^74
2019-12-06-Anonymous-NF
no factor from 2^72 to 2^73
2019-12-06-Anonymous-NF
no factor from 2^71 to 2^72
2018-11-09ramgeisNF
no factor from 2^70 to 2^71
2014-08-29linamentC-LL
6386BF6A538FE68A
2013-04-18Bill StaffenNF
no factor from 2^69 to 2^70
2012-05-17XyzzyNF
no factor from 2^68 to 2^69
2011-05-27UngelovendeNF
no factor from 2^67 to 2^68