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

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MnStatusDetails
11681491Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
197417197911134.2old
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2021-10-11Chad Steenerson C19BEFC820BB6C6C11113608753
History
DateUserTypeResult
2025-06-17yuriy_5-1NF
no factor from 2^70 to 2^71
2025-05-07yuriy_5-1NF
no factor from 2^69 to 2^70
2025-03-28yuriy_5-1NF
no factor from 2^68 to 2^69
2025-03-11yuriy_5-1NF-PM1
B1=7008894, B2=453435840
2025-02-10yuriy_5-1NF-PM1
B1=4672596, B2=604581120
2024-06-17yuriy_5-1NF-PM1
B1=262144, B2=137022600
2021-10-11Jorge CoveiroCERT
PRP Certification
Proof certified good
2021-10-11Chad Steenerson C-PRP
M11681491/19741719791 : C19BEFC820BB6C6C
PRP proof power = 8
PRP: Verified
Proof certified good