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
8909449Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
174625200411134.0old
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2019-03-31_p95holder_F9416244C8C9ACBF1331481253
Verified2020-09-22kutensF9416244C8C9ACBF1801378853
History
DateUserTypeResult
2024-11-17Stef42NF-PM1
B1=2531000, B2=3041403750
2024-11-15Stef42NF
no factor from 2^69 to 2^70
2024-10-05Stef42NF
no factor from 2^68 to 2^69
2020-09-22Mikhail KominCERT
PRP Certification
Proof certified good
2020-09-22kutensC-PRP
M8909449/17462520041 : F9416244C8C9ACBF
PRP proof power = 8
PRP: Verified
Proof certified good
2019-03-31_p95holder_C-PRP
M8909449/17462520041 : F9416244C8C9ACBF
PRP: Verified
PRP without proof (not generated)