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
15500519Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
31001039824.9old
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-08-20Corbyguy0441A07D8726B18B11515653053
History
DateUserTypeResult
2023-08-20Jonathan WebbCERT
PRP Certification
Proof certified good
2023-08-20CorbyguyC-PRP
M15500519/31001039 : 0441A07D8726B18B
PRP proof power = 8
PRP: Verified
Proof certified good
2023-07-17nordiNF-PM1
B1=480000, B2=308477400
2023-06-28nordiNF-PM1
B1=480000