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

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MnStatusDetails
223Composite, with 5 known prime factors. Cofactor is PRP (Probable-Prime).
Factored
FactorDigitsBitsDate
18287514.2old
196687617.6old
1466449720.5old
2916841721.5old
14694952623987801238092270.3old
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2018-01-24_p95holder_PRP_PRP_PRP_PRP_5013
History
DateUserTypeResult
2018-01-24_p95holder_P-PRP
M223/18287/196687/1466449/2916841/1469495262398780123809 is a probable prime.