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

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MnStatusDetails
2952379Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
425142577928.7old
ECM
DigitsB1Curves
255000070 / 280
Estimated T-Level: 21.3
TF below 2^66 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-25Oliver Kruse8D74832E25A65CA41223281053
Verified2017-12-09kkmrkkblmbrbk8D74832E25A65CA41103487353
History
DateUserTypeResult
2023-02-12USAFSSNF-PM1
B1=360000, B2=298405800
2017-12-09kkmrkkblmbrbkC-PRP
M2952379/425142577 : 8D74832E25A65CA4
PRP: Verified
PRP without proof (not generated)
2017-10-25Oliver KruseC-PRP
M2952379/425142577 : 8D74832E25A65CA4
PRP: Verified
PRP without proof (not generated)