Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
15380243Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
18456291611030.8old
250738872346391444.52008-09-08 11:30:35
1275695483719061362325112476.82023-07-12 06:06:50
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-07-25Funky Waddle18FBBB7F558C0FEB31013165053
P-1 factors
DateFactorB1B2
2023-07-12127569548371906136232511480000418652850
History
DateUserTypeResult
2023-07-25curtiscCERT
PRP Certification
Proof certified good
2023-07-25Funky WaddleC-PRP
M15380243/1845629161/25073887234639/127569548371906136232511 : 18FBBB7F558C0FEB
PRP proof power = 8
PRP: Verified
Proof certified good
2023-07-12nordiF-PM1
Factor: 127569548371906136232511 / (P-1, B1=480000, B2=418652850)
2023-06-04nordiNF-PM1
B1=480000
2008-09-08Will EdgingtonF
Factor: 25073887234639