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
15203431Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
80274115691032.9old
727636207671136.12008-09-08 11:26:30
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-07-01LordJulius009D83602545B3C32376382453
History
DateUserTypeResult
2023-07-01deangramCERT
PRP Certification
Proof certified good
2023-07-01LordJuliusC-PRP
M15203431/8027411569/72763620767 : 009D83602545B3C3
PRP proof power = 8
PRP: Verified
Proof certified good
2023-05-28nordiNF-PM1
B1=400000, B2=407843436
2023-05-11nordiNF-PM1
B1=400000
2022-04-24Lisander ViaeneNF
no factor from 2^67 to 2^68
2008-09-08Will EdgingtonF
Factor: 72763620767