Marin Mersenne 2^P-1
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MnStatusDetails
2998601Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
1389449032743187500712166.92010-10-19 18:05:17
ECM
DigitsB1Curves
255000064 / 280
Estimated T-Level: 21.1
TF below 2^65 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Marco Negrazus34ADBCEA71F74A700
Bad1999-06-06Stephen WoodE73F4C7CE4A9FA571035401
Verified (Factored)1999-12-15Jan Peeters34ADBCEA71F74A701295082
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-27Oliver Kruse233E73C18011B6D51168259153
Verified2017-12-11kkmrkkblmbrbk233E73C18011B6D51240500253
History
DateUserTypeResult
2023-02-28USAFSSNF-PM1
B1=320000, B2=224923050
2017-12-11kkmrkkblmbrbkC-PRP
M2998601/138944903274318750071 : 233E73C18011B6D5
PRP: Verified
PRP without proof (not generated)
2017-10-27Oliver KruseC-PRP
M2998601/138944903274318750071 : 233E73C18011B6D5
PRP: Verified
PRP without proof (not generated)
2010-10-19markrF-PM1
Factor: 138944903274318750071
2009-02-14Sturle SundeNF
no factor from 2^60 to 2^61