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
11619617Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
306757888811134.8old
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2021-09-21LaurV542D51AA949242BD1106034653
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
2025-03-28yuriy_5-1NF
no factor from 2^68 to 2^69
2025-03-11yuriy_5-1NF-PM1
B1=6971766, B2=448721460
2025-02-10yuriy_5-1NF-PM1
B1=4647844, B2=600169020
2024-06-17yuriy_5-1NF-PM1
B1=262144, B2=137022600
2021-09-21DerekCERT
PRP Certification
Proof certified good
2021-09-21LaurVC-PRP
M11619617/30675788881 : 542D51AA949242BD
PRP proof power = 8
PRP: Verified
Proof certified good