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

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MnStatusDetails
12700507Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
736629407929.5old
1263391042844709371856.82015-05-01 11:42:19
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2022-05-03Poao3E8FB0A444DA61212375569453
History
DateUserTypeResult
2022-06-23LordJuliusNF
no factor from 2^66 to 2^67
2022-06-23LordJuliusNF
no factor from 2^65 to 2^66
2022-06-23LordJuliusNF
no factor from 2^64 to 2^65
2022-05-03curtiscCERT
PRP Certification
Proof certified good
2022-05-03PoaoC-PRP
M12700507/736629407/126339104284470937 : 3E8FB0A444DA6121
PRP proof power = 8
PRP: Verified
Proof certified good
2022-04-22Lisander ViaeneNF-PM1
B1=250000, B2=253292130
2022-04-18Lisander ViaeneNF
no factor from 2^67 to 2^68
2015-05-01TJAOIF
Factor: 126339104284470937 / TF: 56-57