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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MnStatusDetails
2791697Factored
FactorDigitsBitsDate
503094639684290928072065.42009-03-18 02:11:12
ECM
DigitsB1Curves
25500002 / 280
Estimated T-Level: 20.0 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Dax Prather790CBE1B934B0ED30
Verified (Factored)1998-10-18Alexey Guzeev790CBE1B934B0ED30
Verified (Factored)1999-06-06Paul Phillips790CBE1B934B0ED32263447
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-10-21Oliver Kruse001B440B0E6BEF90170183853
Verified2017-12-06Chang Chia-Tche001B440B0E6BEF901227904353
History
DateUserTypeResult
2023-01-29USAFSSNF-PM1
B1=360000, B2=287380170
2022-03-11LordJuliusNF
no factor from 2^1 to 2^60
2017-12-06Chang Chia-TcheC-PRP
M2791697/50309463968429092807 : 001B440B0E6BEF90
PRP: Verified
PRP without proof (not generated)
2017-10-21Oliver KruseC-PRP
M2791697/50309463968429092807 : 001B440B0E6BEF90
PRP: Verified
PRP without proof (not generated)
2009-03-18SmurgsF-ECM
Factor: 50309463968429092807
2009-02-13Sturle SundeNF
no factor from 2^60 to 2^61