Marin Mersenne 2^P-1
Username
Password
Forgot password?
White
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
8021471Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
64171769825.9old
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2018-07-25_p95holder_6F9A9624A55C80E61562160253
Verified2020-01-05Luigi Morelli6F9A9624A55C80E61584722253
History
DateUserTypeResult
2024-02-24Stef42NF-PM1
B1=937000, B2=1792472220
2020-01-05Luigi MorelliC-PRP
M8021471/64171769 : 6F9A9624A55C80E6
PRP: Verified
PRP without proof (not generated)
2018-07-25_p95holder_C-PRP
M8021471/64171769 : 6F9A9624A55C80E6
PRP: Verified
PRP without proof (not generated)