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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
7897621Factored
FactorDigitsBitsDate
28916149524991318571961.3old
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2018-06-05_p95holder_190FECB2EC0FB2B01148056153
Verified2019-11-12arnaud190FECB2EC0FB2B01181300753
History
DateUserTypeResult
2024-02-02Stef42NF-PM1
B1=950000, B2=1968826860
2019-11-12arnaudC-PRP
M7897621/2891614952499131857 : 190FECB2EC0FB2B0
PRP: Verified
PRP without proof (not generated)
2018-06-05_p95holder_C-PRP
M7897621/2891614952499131857 : 190FECB2EC0FB2B0
PRP: Verified
PRP without proof (not generated)