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
18288769Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
3148228695671238.2old
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2025-09-14xyuzyz0751CB95F03C0A031994085553
History
DateUserTypeResult
2025-09-14SteveCCERT
PRP Certification
Proof certified good
2025-09-14xyuzyzC-PRP
M18288769/314822869567 : 0751CB95F03C0A03
PRP proof power = 8
PRP: Verified
Proof certified good
2025-08-31nordiNF-PM1
B1=500000, B2=261614430