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

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MnStatusDetails
2570989Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
77129671826.2old
283146040818989291754.72014-12-05 12:50:56
ECM
DigitsB1Curves
255000081 / 280
Estimated T-Level: 21.4
TF below 2^66 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-15Oliver KruseE1D13DA711F8790D2179782253
Verified2017-12-01kkmrkkblmbrbkE1D13DA711F8790D211886953
History
DateUserTypeResult
2022-09-01USAFSSNF-PM1
B1=300000, B2=258641460
2017-12-01kkmrkkblmbrbkC-PRP
M2570989/77129671/28314604081898929 : E1D13DA711F8790D
PRP: Verified
PRP without proof (not generated)
2017-10-15Oliver KruseC-PRP
M2570989/77129671/28314604081898929 : E1D13DA711F8790D
PRP: Verified
PRP without proof (not generated)
2014-12-05TJAOIF
Factor: 28314604081898929 / TF: 54-55