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
358571Factored
FactorDigitsBitsDate
213101847889708223828686936548131100.72019-04-02 01:22:39
ECM
DigitsB1Curves
2550000280 / 280
30250000286 / 640
Estimated T-Level: 27.2 ⓘ
TF below 2^85 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)David Slowinski391F0
Verified (Factored)Sergio Filippini91ED46B8617BF91F0
Verified (Factored)Brian J. Beesley91ED46B8617BF91F0
Verified (Factored)Eivind Triel91ED46B8617BF91F91789
Verified (Factored)2016-06-01MadPoo91ED46B8617BF91F319885
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2019-04-03_p95holder_930981A300834EE2111330253
Verified2019-04-03ATH930981A300834EE214340253
Verified2019-04-03matzetoni930981A300834EE2124181053
History
DateUserTypeResult
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2019-04-03matzetoniC-PRP
M358571/2131018478897082238286869365481 : 930981A300834EE2
PRP: Verified
PRP without proof (small exponent)
2019-04-03ATHC-PRP
M358571/2131018478897082238286869365481 : 930981A300834EE2
PRP: Verified
PRP without proof (small exponent)
2019-04-03_p95holder_C-PRP
M358571/2131018478897082238286869365481 : 930981A300834EE2
PRP: Verified
PRP without proof (small exponent)
2019-04-02alexF-ECM
Factor: 2131018478897082238286869365481 / (ECM curve 36, B1=250000, B2=25000000, Sigma=1094805956127717)
2018-02-22BloodERazorNF
no factor from 2^64 to 2^65
2018-02-22Gordon SpenceNF
no factor from 2^64 to 2^65
2016-11-18mikrNF-PM1
B1=60000000, B2=3000000000, E=12
2016-06-01MadPooC-LL
91ED46B8617BF91F
2015-12-23Gordon SpenceNF
no factor from 2^63 to 2^64
2015-12-23Gordon SpenceNF
no factor from 2^62 to 2^63
2015-07-26NRNF
no factor from 2^61 to 2^62
2013-07-02Sid & AndyNF
no factor from 2^60 to 2^61
2012-02-28alpertronNF-PM1
B1=10000000, B2=200000000, E=12
2011-08-10JossNF-PM1
B1=1255936
2009-01-23Sturle SundeNF
no factor from 2^59 to 2^60
2008-12-29Sturle SundeNF
no factor from 2^58 to 2^59