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

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Exponent Range:










MnStatusDetails
7231261Factored
FactorDigitsBitsDate
587749260769854040135869037158490362964740132.12023-01-01 11:58:16
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)1999-05-02Stephen Wood00991431AD4BE8D46826747
Verified (Factored)2002-03-24Peter Neylan00991431AD4BE8D43241417
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-01-06Perig11E5F5B0C1FF81681228292053
P-1 factors
DateFactorB1B2
2023-01-0158774926076985404013586903715849036296471600000016143964200
History
DateUserTypeResult
2023-01-06ANONYMOUSCERT
PRP Certification
Proof certified good
2023-01-06PerigC-PRP
M7231261/5877492607698540401358690371584903629647 : 11E5F5B0C1FF8168
PRP proof power = 8
PRP: Verified
Proof certified good
2023-01-01yoyorocks1F-PM1
Factor: 5877492607698540401358690371584903629647 / (P-1, B1=16000000, B2=16143964200)
2021-12-27-Anonymous-NF
no factor from 2^72 to 2^73
2021-09-28SRBaseNF
no factor from 2^71 to 2^72
2021-08-24SRBaseNF
no factor from 2^70 to 2^71
2021-08-19SRBaseNF
no factor from 2^69 to 2^70
2020-03-27TJAOINF
no factor from 2^68 to 2^69
2018-07-23ramgeisNF
no factor from 2^67 to 2^68
2016-10-13Gordon SpenceNF
no factor from 2^66 to 2^67
2015-06-16VictordeHollanderNF
no factor from 2^65 to 2^66
2013-11-14David CampeauNF
no factor from 2^64 to 2^65
2013-11-03NesowaNF
no factor from 2^63 to 2^64
2012-01-18Carsten KossendeyNF-PM1
B1=460000, B2=14030000, E=12