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
9638143
Composite, with 2 known prime factors. Cofactor is composite.
Trial Factored to 269
TF target 268
Factored
FactorDigitsBitsDate
22360491771031.1old
1103021490862683191856.62015-04-16 11:53:10
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Verified
PRP without proof (not generated)
2019-10-10Chang Chia-TcheC3A40FE0E7E8D3D9263260453
Verified
Certified Good
2020-12-17storm5510C3A40FE0E7E8D3D92392885153
History
DateUserTypeResult
2025-12-26Mingye WangNF-PM1B1=1700000, B2=3685221540
2025-12-05Mingye WangNFno factor TF: 68-69
2020-12-17William F. Garnett IIICERT
Proof certified good
2020-12-17storm5510C-PRPM9638143/2236049177/110302149086268319 : C3A40FE0E7E8D3D9
Proof Certified Good

Proof Power: 8

2019-10-10Chang Chia-TcheC-PRPM9638143/2236049177/110302149086268319 : C3A40FE0E7E8D3D9
2015-04-16TJAOIFFactor: 110302149086268319