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
11661317Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
6511446186471239.2old
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2021-10-09onlinegame9285BFD1A92113FB143955213
Verified2021-10-14LaurV9285BFD1A92113FB1139940113
History
DateUserTypeResult
2025-06-12yuriy_5-1NF
no factor from 2^70 to 2^71
2025-05-06yuriy_5-1NF
no factor from 2^69 to 2^70
2025-03-31yuriy_5-1NF
no factor from 2^68 to 2^69
2025-03-11yuriy_5-1NF-PM1
B1=6996786, B2=453435840
2024-08-21yuriy_5-1NF-PM1
B1=2800000, B2=5818231650
2021-10-14LaurVC-PRP
M11661317/651144618647 : 9285BFD1A92113FB
PRP: Verified
PRP without proof (not generated)
2021-10-09onlinegameC-PRP
M11661317/651144618647 : 9285BFD1A92113FB
PRP: Verified
PRP without proof (not generated)