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
6963491Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
181050767927.4old
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2018-01-27Oliver KruseFC58A81F836DAA1D1167330053
Verified2019-02-12Chang Chia-TcheFC58A81F836DAA1D1376119153
History
DateUserTypeResult
2023-12-30Stef42NF-PM1
B1=562000, B2=960946350
2019-02-12Chang Chia-TcheC-PRP
M6963491/181050767 : FC58A81F836DAA1D
PRP: Verified
PRP without proof (not generated)
2018-01-27Oliver KruseC-PRP
M6963491/181050767 : FC58A81F836DAA1D
PRP: Verified
PRP without proof (not generated)