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

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MnStatusDetails
12215219Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
12703827771030.2old
115845903627530711753.42014-09-20 10:24:45
196037416742737691754.12014-11-04 12:39:05
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2022-02-13Ember_Edison44933045A1E3372B3299024853
History
DateUserTypeResult
2022-02-13curtiscCERT
PRP Certification
Proof certified good
2022-02-13Ember_EdisonC-PRP
M12215219/1270382777/11584590362753071/19603741674273769 : 44933045A1E3372B
PRP proof power = 8
PRP: Verified
Proof certified good
2022-02-08nordiNF-PM1
B1=400000, B2=343450800
2022-01-27nordiNF-PM1
B1=400000
2014-11-04TJAOIF
Factor: 19603741674273769 / TF: 54-55
2014-09-20TJAOIF
Factor: 11584590362753071 / TF: 53-54