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

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MnStatusDetails
2874029Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
413860177928.6old
ECM
DigitsB1Curves
255000050 / 280
Estimated T-Level: 20.9
TF below 2^64 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-23Oliver KruseC0C7D225AF28440F1181705653
Verified2017-12-08kkmrkkblmbrbkC0C7D225AF28440F166651753
History
DateUserTypeResult
2022-11-25USAFSSNF-PM1
B1=255000, B2=196319970
2017-12-08kkmrkkblmbrbkC-PRP
M2874029/413860177 : C0C7D225AF28440F
PRP: Verified
PRP without proof (not generated)
2017-10-23Oliver KruseC-PRP
M2874029/413860177 : C0C7D225AF28440F
PRP: Verified
PRP without proof (not generated)