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
18289903Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
4535402848215131548.7old
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2025-09-15Sidi70F898B13CFD58F91825938653
History
DateUserTypeResult
2025-09-16Dr. DwayneCERT
PRP Certification
Proof certified good
2025-09-15SidiC-PRP
M18289903/453540284821513 : 70F898B13CFD58F9
PRP proof power = 8
PRP: Verified
Proof certified good
2025-09-02nordiNF-PM1
B1=500000, B2=261614430