Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
2025377Factored
FactorDigitsBitsDate
68610888526511891795932272.52020-03-02 22:57:48
ECM
DigitsB1Curves
2550000280 / 280
30250000113 / 640
Estimated T-Level: 25.9 ⓘ
TF below 2^81 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Michael Giering8E685F028031E38F0
Verified (Factored)Michael Myers8E685F028031E38F0
Verified (Factored)1999-01-29Jordan Share8E685F028031E38F980962
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2020-03-03Niels_Mache_Nextcloud7F732E4CC04EA0B51184925953
Verified2020-03-03Jinyuan Wang7F732E4CC04EA0B51190140653
Verified2020-03-04oodaira7F732E4CC04EA0B51137136353
History
DateUserTypeResult
2020-03-04oodairaC-PRP
M2025377/6861088852651189179593 : 7F732E4CC04EA0B5
PRP: Verified
PRP without proof (not generated)
2020-03-03Jinyuan WangC-PRP
M2025377/6861088852651189179593 : 7F732E4CC04EA0B5
PRP: Verified
PRP without proof (not generated)
2020-03-03Niels_Mache_NextcloudC-PRP
M2025377/6861088852651189179593 : 7F732E4CC04EA0B5
PRP: Verified
PRP without proof (not generated)
2020-03-02mnd9F-ECM
Factor: 6861088852651189179593 / (ECM curve 2, B1=50000, B2=5000000, Sigma=959105742657655)
2019-03-26mikrNF-PM1
B1=4000000, B2=200000000, E=12
2019-03-20chuenkitNF
no factor from 2^67 to 2^68
2016-07-06Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2015-10-31ramgeisNF
no factor from 2^65 to 2^66
2015-04-10VictordeHollanderNF
no factor from 2^64 to 2^65
2015-04-10VictordeHollanderNF
no factor from 2^63 to 2^64
2013-10-21David CampeauNF-PM1
B1=580000, B2=15080000, E=12
2013-02-11dbaughNF
no factor from 2^62 to 2^63
2012-02-06Sebastian HornbostelNF
no factor from 2^61 to 2^62
2010-12-14JossNF-PM1
B1=202537
2009-01-03Sturle SundeNF
no factor from 2^60 to 2^61