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
6978677Factored
FactorDigitsBitsDate
88809366154521781315992272.92024-02-22 21:09:46
37947788777232312637255512581.72024-02-22 21:09:46
ECM
DigitsB1Curves
25500006 / 280
Estimated T-Level: 20.1 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)1999-08-22Rick DardasD6DDF44AE593C7B91908768
Verified (Factored)2002-02-17King ButlerD6DDF44AE593C7B92123395
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2024-02-22Jason Lynch00E227DCF3D660562329218053
P-1 factors
DateFactorB1B2
2024-02-223370119068271676838889320798281826827509678604913897000131528336940
History
DateUserTypeResult
2024-02-23curtiscCERT
PRP Certification
Proof certified good
2024-02-22Jason LynchC-PRP
M6978677/3794778877723231263725551/8880936615452178131599 : 00E227DCF3D66056
PRP proof power = 8
PRP: Verified
Proof certified good
2024-02-22Jason LynchF-PM1
Factors: 8880936615452178131599,3794778877723231263725551 / (P-1, B1=13897000, B2=131528336940)
2021-11-24Seth_TrNF-PM1
B1=4000000, B2=110000000, E=12
2021-10-15SRBaseNF
no factor from 2^71 to 2^72
2021-09-09SRBaseNF
no factor from 2^70 to 2^71
2021-08-09takahashiNF
no factor from 2^69 to 2^70
2020-04-24TJAOINF
no factor from 2^68 to 2^69
2020-01-30takahashiNF-PM1
B1=600000, B2=12000000, E=12
2018-02-27-Anonymous-NF
no factor from 2^67 to 2^68
2016-04-26Gordon SpenceNF
no factor from 2^66 to 2^67
2015-07-03VictordeHollanderNF
no factor from 2^65 to 2^66
2014-02-15lycornNF
no factor from 2^64 to 2^65
2014-02-09NesowaNF
no factor from 2^63 to 2^64
2011-12-10James HeinrichNF-PM1
B1=135000, B2=2835000, E=6