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

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MnStatusDetails
449Composite, with 4 known prime factors. Cofactor is PRP (Probable-Prime).
Factored
FactorDigitsBitsDate
1256303720.3old
68711974868411342.6old
35786206164683069815032271.6old
52638573376805118944194716850490915936118.7old
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2024-09-06George WoltmanPRP_PRP_PRP_PRP_4013
History
DateUserTypeResult
2024-09-06George WoltmanP-PRP
M449/1256303/6871197486841/3578620616468306981503/526385733768051189441947168504909159 is a probable prime.