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

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MnStatusDetails
2787527Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
618830994011135.8old
398349204412331445.22008-09-30 14:37:56
123005544064828557292063.42017-02-14 12:22:35
ECM
DigitsB1Curves
255000059 / 280
Estimated T-Level: 21.1
TF below 2^65 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-21Oliver KruseBFFB9E3EEB9EF2293116357053
Verified2017-12-06kkmrkkblmbrbkBFFB9E3EEB9EF2293178589253
History
DateUserTypeResult
2023-01-18USAFSSNF-PM1
B1=330000, B2=261254070
2017-12-06kkmrkkblmbrbkC-PRP
M2787527/61883099401/39834920441233/12300554406482855729 : BFFB9E3EEB9EF229
PRP: Verified
PRP without proof (not generated)
2017-10-21Oliver KruseC-PRP
M2787527/61883099401/39834920441233/12300554406482855729 : BFFB9E3EEB9EF229
PRP: Verified
PRP without proof (not generated)
2017-02-14TJAOIF
Factor: 12300554406482855729 / TF: 63-64
2008-09-30markrF
Factor: 39834920441233