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:





MnDetails
9631361
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 269
TF target 268
Factored
FactorDigitsBitsDate
85971411085318481531962.9old
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Verified
PRP without proof (not generated)
2019-10-05mnd93B95770725B47EF31829831753
Verified
Certified Good
2020-12-17storm55103B95770725B47EF31692545953
History
DateUserTypeResult
2025-12-21Mingye WangNF-PM1B1=1700000, B2=4638613980
2025-12-04Mingye WangNFno factor TF: 68-69
2020-12-17Simon JosefssonCERT
Proof certified good
2020-12-17storm5510C-PRPM9631361/8597141108531848153 : 3B95770725B47EF3
Proof Certified Good

Proof Power: 8

2019-10-05mnd9C-PRPM9631361/8597141108531848153 : 3B95770725B47EF3
1999-07-27-anonymous-FFactor: 8597141108531848153