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

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MnStatusDetails
2953777Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
3074291101611238.2old
ECM
DigitsB1Curves
2550000107 / 280
Estimated T-Level: 21.9
TF below 2^68 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-26Oliver Kruse82C899C3158600FC118475753
Verified2017-12-09ATH82C899C3158600FC1172470053
History
DateUserTypeResult
2023-02-12USAFSSNF-PM1
B1=360000, B2=298405800
2017-12-09ATHC-PRP
M2953777/307429110161 : 82C899C3158600FC
PRP: Verified
PRP without proof (not generated)
2017-10-26Oliver KruseC-PRP
M2953777/307429110161 : 82C899C3158600FC
PRP: Verified
PRP without proof (not generated)