Marin Mersenne 2^P-1
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MnStatusDetails
369283Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
7524444097545296604954036489193099.22019-04-06 21:42:56
ECM
DigitsB1Curves
2550000280 / 280
30250000292 / 640
Estimated T-Level: 27.3 ⓘ
TF below 2^86 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)David Slowinski142A0
Verified (Factored)Michael J. Kilfoyle1B9E7739F721D42A0
Verified (Factored)Klaus Kastens1B9E7739F721D42A0
Verified (Factored)Eivind Triel1B9E7739F721D42A249940
Verified (Factored)2016-06-01MadPoo1B9E7739F721D42A115687
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2019-04-07matzetoniB7EFAD748619BC4817371453
Verified2019-04-07artorolloB7EFAD748619BC48132908453
Assigned
AssignedUserWork TypeStage% DoneUpdatedExpired
2025-04-26-Anonymous-factor ECM smallC1S20.00 % 2025-05-11
History
DateUserTypeResult
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2019-04-07artorolloC-PRP
M369283/752444409754529660495403648919 : B7EFAD748619BC48
PRP: Verified
PRP without proof (small exponent)
2019-04-07matzetoniC-PRP
M369283/752444409754529660495403648919 : B7EFAD748619BC48
PRP: Verified
PRP without proof (small exponent)
2019-04-06alexF-ECM
Factor: 752444409754529660495403648919 / (ECM curve 42, B1=250000, B2=25000000, Sigma=6052478377577992)
2018-02-22Gordon SpenceNF
no factor from 2^64 to 2^65
2018-02-13BloodERazorNF
no factor from 2^64 to 2^65
2016-12-07mikrNF-PM1
B1=60000000, B2=3000000000, E=12
2016-06-01MadPooC-LL
1B9E7739F721D42A
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
2013-05-01lycornNF
no factor from 2^60 to 2^61
2012-03-15alpertronNF-PM1
B1=10000000, B2=200000000, E=12
2012-03-05JossNF-PM1
B1=1511130
2011-08-17JossNF-PM1
B1=1208904
2009-01-25Sturle SundeNF
no factor from 2^59 to 2^60
2009-01-06Sturle SundeNF
no factor from 2^58 to 2^59