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

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MnStatusDetails
2956651Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
24835868411031.2old
963217762791136.52008-09-07 19:43:05
ECM
DigitsB1Curves
255000066 / 280
Estimated T-Level: 21.2
TF below 2^65 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-26Oliver Kruse3AB46ECAD7EEE6CE250931053
Verified2017-12-09kkmrkkblmbrbk3AB46ECAD7EEE6CE2141464553
History
DateUserTypeResult
2023-02-13USAFSSNF-PM1
B1=360000, B2=298405800
2017-12-09kkmrkkblmbrbkC-PRP
M2956651/2483586841/96321776279 : 3AB46ECAD7EEE6CE
PRP: Verified
PRP without proof (not generated)
2017-10-26Oliver KruseC-PRP
M2956651/2483586841/96321776279 : 3AB46ECAD7EEE6CE
PRP: Verified
PRP without proof (not generated)
2008-09-07Will EdgingtonF
Factor: 96321776279