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
8028439Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
23457664002891905111961.0old
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2018-07-17_p95holder_067405E132684B991286811153
Verified2020-01-04marssystems067405E132684B991661302053
History
DateUserTypeResult
2024-02-24Stef42NF-PM1
B1=944000, B2=1792472220
2020-01-04marssystemsC-PRP
M8028439/2345766400289190511 : 067405E132684B99
PRP: Verified
PRP without proof (not generated)
2018-07-17_p95holder_C-PRP
M8028439/2345766400289190511 : 067405E132684B99
PRP: Verified
PRP without proof (not generated)