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

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Exponent Range:










MnStatusDetails
4371529Factored
FactorDigitsBitsDate
117682445095637646983184815408093067059371343139.82022-12-18 06:57:54
ECM
DigitsB1Curves
255000012 / 280
Estimated T-Level: 20.2 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)1998-11-21PaySys InternationalA1944D3895AFBCD10
Verified (Factored)1999-10-29Hervé LauretA1944D3895AFBCD193577
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2022-12-23PerigAD4115265487D0BE1240875053
P-1 factors
DateFactorB1B2
2022-12-181176824450956376469831848154080930670593713620000032756371830
History
DateUserTypeResult
2022-12-23curtiscCERT
PRP Certification
Proof certified good
2022-12-23PerigC-PRP
M4371529/1176824450956376469831848154080930670593713 : AD4115265487D0BE
PRP proof power = 7
PRP: Verified
Proof certified good
2022-12-18DRobinsonPEF-PM1
Factor: 1176824450956376469831848154080930670593713 / (P-1, B1=6200000, B2=32756371830)
2021-01-31-Anonymous-NF
no factor from 2^71 to 2^72
2021-01-31-Anonymous-NF
no factor from 2^70 to 2^71
2021-01-25-Anonymous-NF
no factor from 2^69 to 2^70
2021-01-25-Anonymous-NF
no factor from 2^68 to 2^69
2018-10-29chuenkitNF
no factor from 2^67 to 2^68
2018-10-26Ismo LaitelaNF-PM1
B1=2189464, B2=63494458, E=12
2018-05-03chuenkitNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-06-18snme2pm1NF
no factor from 2^65 to 2^66
2014-07-12lycornNF
no factor from 2^64 to 2^65
2014-07-12JayderNF
no factor from 2^63 to 2^64
2012-02-10GrunwalderGIMPNF
no factor from 2^1 to 2^63
2012-01-04Squeeky_SquirrelNF-PM1
B1=110000, B2=2255000, E=6
2010-11-16markrNF
no factor from 2^61 to 2^62
2009-08-05Carsten KossendeyNF-PM1
B1=25000, B2=356250