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

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MnStatusDetails
11646961Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
1975779566211531531857.5old
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2021-10-29ThomRuleyA0521FBE66346E6E1140301813
Verified2021-10-30LaurVA0521FBE66346E6E1806985013
History
DateUserTypeResult
2025-06-10yuriy_5-1NF
no factor from 2^70 to 2^71
2025-05-05yuriy_5-1NF
no factor from 2^69 to 2^70
2025-04-04yuriy_5-1NF
no factor from 2^68 to 2^69
2025-03-11yuriy_5-1NF-PM1
B1=6988176, B2=453435840
2025-02-10yuriy_5-1NF-PM1
B1=4658784, B2=598008840
2024-06-17yuriy_5-1NF-PM1
B1=262144, B2=137022600
2021-10-30LaurVC-PRP
M11646961/197577956621153153 : A0521FBE66346E6E
PRP: Verified
PRP without proof (not generated)
2021-10-29ThomRuleyC-PRP
M11646961/197577956621153153 : A0521FBE66346E6E
PRP: Verified
PRP without proof (not generated)