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

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MnStatusDetails
392629Factored
FactorDigitsBitsDate
58365993327117531537841685772892.22019-04-15 19:07:55
ECM
DigitsB1Curves
2550000280 / 280
30250000457 / 640
Estimated T-Level: 28.6 ⓘ
TF below 2^90 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)David Slowinski69DA0
Verified (Factored)Warwick Harvey4B081CB59C7DE9DA0
Verified (Factored)Matt Horbal4B081CB59C7DE9DA0
Verified (Factored)Eivind Triel4B081CB59C7DE9DA297171
Verified (Factored)2016-06-01MadPoo4B081CB59C7DE9DA179409
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2019-04-16artorolloCFB16FC1DF9CA991129471853
Verified2019-04-17marssystemsCFB16FC1DF9CA991116687853
History
DateUserTypeResult
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2019-04-30Gordon SpenceNF
no factor from 2^65 to 2^66
2019-04-17marssystemsC-PRP
M392629/5836599332711753153784168577 : CFB16FC1DF9CA991
PRP: Verified
PRP without proof (small exponent)
2019-04-16artorolloC-PRP
M392629/5836599332711753153784168577 : CFB16FC1DF9CA991
PRP: Verified
PRP without proof (small exponent)
2019-04-15alexF-ECM
Factor: 5836599332711753153784168577 / (ECM curve 207, B1=250000, B2=25000000, Sigma=5296512713313998)
2018-01-26BloodERazorNF
no factor from 2^64 to 2^65
2017-01-19mikrNF-PM1
B1=60000000, B2=3000000000, E=12
2016-06-01MadPooC-LL
4B081CB59C7DE9DA
2015-11-18Gordon SpenceNF
no factor from 2^63 to 2^64
2015-11-18Gordon SpenceNF
no factor from 2^62 to 2^63
2015-08-25NRNF
no factor from 2^61 to 2^62
2012-07-14alpertronNF-PM1
B1=10000000, B2=200000000, E=12
2011-02-22monstNF
no factor from 2^60 to 2^61
2009-01-11Sturle SundeNF
no factor from 2^59 to 2^60
2008-12-29Sturle SundeNF
no factor from 2^58 to 2^59