Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
2570651Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
62311551979611342.5old
16566955684210791650.62014-03-30 14:30:31
ECM
DigitsB1Curves
2550000128 / 280
Estimated T-Level: 22.3
TF below 2^69 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-15Oliver Kruse735B7F79AB9AD008218873553
Verified2017-12-01storm5510735B7F79AB9AD008259056353
History
DateUserTypeResult
2022-09-01USAFSSNF-PM1
B1=300000, B2=258641460
2017-12-01storm5510C-PRP
M2570651/6231155197961/1656695568421079 : 735B7F79AB9AD008
PRP: Verified
PRP without proof (not generated)
2017-10-15Oliver KruseC-PRP
M2570651/6231155197961/1656695568421079 : 735B7F79AB9AD008
PRP: Verified
PRP without proof (not generated)
2014-03-30pdazzlF
Factor: 1656695568421079 / TF: 48-54