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
11643659Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
191987556843391991754.1old
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2021-09-27Oliver Kruse88123EF2E85DBCA0189869453
History
DateUserTypeResult
2025-03-10yuriy_5-1NF-PM1
B1=6986190, B2=453435840
2025-02-10yuriy_5-1NF-PM1
B1=4657460, B2=598008840
2024-12-04yuriy_5-1NF
no factor from 2^71 to 2^72
2024-12-04yuriy_5-1NF
no factor from 2^70 to 2^71
2024-12-04yuriy_5-1NF
no factor from 2^69 to 2^70
2024-12-04yuriy_5-1NF
no factor from 2^68 to 2^69
2024-06-17yuriy_5-1NF-PM1
B1=262144, B2=137022600
2021-09-27curtiscCERT
PRP Certification
Proof certified good
2021-09-27Oliver KruseC-PRP
M11643659/19198755684339199 : 88123EF2E85DBCA0
PRP proof power = 8
PRP: Verified
Proof certified good