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
18292723Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
15311218785605591650.4old
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2025-09-15Michel Yamagishi185D3D5F526E6B2211743442953
History
DateUserTypeResult
2025-09-16kienvoCERT
PRP Certification
Proof certified good
2025-09-15Michel YamagishiC-PRP
M18292723/1531121878560559 : 185D3D5F526E6B22
PRP proof power = 8
PRP: Verified
Proof certified good
2025-09-08nordiNF-PM1
B1=500000, B2=261614430