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
15199787Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
395194463928.6old
9669800493671239.82008-09-08 11:26:28
15613221206411340.52008-09-08 11:26:28
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-06-28Funky WaddleE70EF4E3E56FE4623171685753
History
DateUserTypeResult
2023-06-28junkman2usaCERT
PRP Certification
Proof certified good
2023-06-28Funky WaddleC-PRP
M15199787/395194463/966980049367/1561322120641 : E70EF4E3E56FE462
PRP proof power = 8
PRP: Verified
Proof certified good
2023-06-09JacobZNF-PM1
B1=487000, B2=532653030
2008-09-08Will EdgingtonF
Factor: 1561322120641
2008-09-08Will EdgingtonF
Factor: 966980049367