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

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MnStatusDetails
369581Factored
FactorDigitsBitsDate
2420493653658272607409995372787.62019-04-07 05:40:58
ECM
DigitsB1Curves
2550000280 / 280
30250000389 / 640
Estimated T-Level: 28.0 ⓘ
TF below 2^88 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)David Slowinski10080
Verified (Factored)Michael J. KilfoyleAA45EB1BB5A250080
Verified (Factored)Klaus KastensAA45EB1BB5A250080
Verified (Factored)Eivind TrielAA45EB1BB5A2500872669
Verified (Factored)2016-06-01MadPooAA45EB1BB5A25008240656
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2019-04-08matzetoni8B85247D13367BAE130166153
Verified2019-04-26Justine V.8B85247D13367BAE14971453
History
DateUserTypeResult
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2019-04-26Justine V.C-PRP
M369581/242049365365827260740999537 : 8B85247D13367BAE
PRP: Verified
PRP without proof (small exponent)
2019-04-08matzetoniC-PRP
M369581/242049365365827260740999537 : 8B85247D13367BAE
PRP: Verified
PRP without proof (small exponent)
2019-04-07alexF-ECM
Factor: 242049365365827260740999537 / (ECM curve 139, B1=250000, B2=25000000, Sigma=5107332807984800)
2018-02-22Gordon SpenceNF
no factor from 2^64 to 2^65
2018-02-13BloodERazorNF
no factor from 2^64 to 2^65
2016-12-13mikrNF-PM1
B1=60000000, B2=3000000000, E=12
2016-06-01MadPooC-LL
AA45EB1BB5A25008
2015-12-24Gordon SpenceNF
no factor from 2^63 to 2^64
2015-12-24Gordon SpenceNF
no factor from 2^62 to 2^63
2015-08-13NRNF
no factor from 2^61 to 2^62
2013-01-06lycornNF
no factor from 2^60 to 2^61
2012-03-16alpertronNF-PM1
B1=10000000, B2=200000000, E=12
2012-03-05JossNF-PM1
B1=1509550
2011-08-17JossNF-PM1
B1=1207640
2009-01-25Sturle SundeNF
no factor from 2^59 to 2^60
2009-01-06Sturle SundeNF
no factor from 2^58 to 2^59