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
409Composite, with 2 known prime factors. Cofactor is PRP (Probable-Prime).
Factored
FactorDigitsBitsDate
44806660670231342.0old
760256266898331446.1old
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2024-09-06George WoltmanPRP_PRP_PRP_PRP_2013
History
DateUserTypeResult
2024-09-06George WoltmanP-PRP
M409/4480666067023/76025626689833 is a probable prime.