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
8883817Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
6452316287111239.2old
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2019-03-15ATH05B85A867E658A411880329353
Verified2020-09-19kutens05B85A867E658A411389750253
History
DateUserTypeResult
2024-10-01Stef42NF-PM1
B1=1827000, B2=3722463360
2020-09-19Ben DeloCERT
PRP Certification
Proof certified good
2020-09-19kutensC-PRP
M8883817/645231628711 : 05B85A867E658A41
PRP proof power = 8
PRP: Verified
Proof certified good
2019-03-15ATHC-PRP
M8883817/645231628711 : 05B85A867E658A41
PRP: Verified
PRP without proof (not generated)