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
14086231Factored
FactorDigitsBitsDate
5374435062179679717640392478.82020-08-04 13:55:34
ECM
DigitsB1Curves
25500004 / 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)2002-11-24Matt Becker14FB8DA91DCF41226626493
Verified (Factored)2005-05-28Brian Jue14FB8DA91DCF41223942484
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2022-12-23Perig40BE2D289C794B181680462653
P-1 factors
DateFactorB1B2
2020-08-0453744350621796797176403970000000
History
DateUserTypeResult
2022-12-25iwesCERT
PRP Certification
Proof certified good
2022-12-23PerigC-PRP
M14086231/537443506217967971764039 : 40BE2D289C794B18
PRP proof power = 8
PRP: Verified
Proof certified good
2020-08-04masserF-PM1
Factor: 537443506217967971764039 / (P-1, B1=7000000)
2020-07-14masserNF
no factor from 2^70 to 2^71
2020-07-14masserNF
no factor from 2^69 to 2^70
2018-02-13ramgeisNF
no factor from 2^68 to 2^69
2018-02-13ramgeisNF
no factor from 2^67 to 2^68
2015-08-23ThaNF
no factor from 2^66 to 2^67
2014-07-22NesowaNF
no factor from 2^65 to 2^66