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

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Exponent Range:










MnStatusDetails
6948679Factored
FactorDigitsBitsDate
25176650941157000266437112581.12021-12-03 09:37:32
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)1999-09-22Dancso AttilaA12394E48BD9E72B6189765
Verified (Factored)2002-05-11Stephen WoodA12394E48BD9E72B3798564
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2021-12-09LaurV10614ECD2466BF7D195084053
P-1 factors
DateFactorB1B2
2021-12-0325176650941157000266437114000000456818670
History
DateUserTypeResult
2021-12-09theojkCERT
PRP Certification
Proof certified good
2021-12-09LaurVC-PRP
M6948679/2517665094115700026643711 : 10614ECD2466BF7D
PRP proof power = 8
PRP: Verified
Proof certified good
2021-12-03Seth_TrF-PM1
Factor: 2517665094115700026643711 / (P-1, B1=4000000, B2=456818670)
2021-11-07Seth_TrNF-PM1
B1=2000000, B2=58000000, E=12
2021-09-25SRBaseNF
no factor from 2^71 to 2^72
2021-08-11SRBaseNF
no factor from 2^70 to 2^71
2021-07-31takahashiNF
no factor from 2^69 to 2^70
2020-04-10TJAOINF
no factor from 2^68 to 2^69
2018-02-26-Anonymous-NF
no factor from 2^67 to 2^68
2016-04-05Gordon SpenceNF
no factor from 2^66 to 2^67
2015-06-26VictordeHollanderNF
no factor from 2^65 to 2^66
2014-02-16lycornNF
no factor from 2^64 to 2^65
2014-02-09NesowaNF
no factor from 2^63 to 2^64
2011-09-04Carsten KossendeyNF-PM1
B1=445000, B2=13350000, E=12