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
9418121
Composite, with 3 known prime factors. Cofactor is composite.
Trial Factored to 270
TF target 268
Factored
FactorDigitsBitsDate
7403208193271239.4old
3664045195169271548.42014-04-03 10:35:25
1281742888742278135272166.82020-09-17 10:09:58
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Factored
PRP without proof (not generated)
2019-09-07mnd909CA579D3BF32EA72747297153
Verified
Certified Good
2020-09-17storm551009CA579D3BF32EA73725248153
History
DateUserTypeResult
2025-11-02Mingye WangNFno factor TF: 68-70
2020-09-17Simon JosefssonCERT
Proof certified good
2020-09-17storm5510C-PRPM9418121/740320819327/366404519516927/128174288874227813527 : 09CA579D3BF32EA7
Proof Certified Good

Proof Power: 8

2020-09-17TJAOIFFactor: 128174288874227813527
2019-09-07mnd9C-PRPM9418121/740320819327/366404519516927 : 09CA579D3BF32EA7
2014-04-03TJAOIFFactor: 366404519516927