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

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MnDetails
947
Composite, with 5 known prime factors. Cofactor is PRP (Probable-Prime).
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
295130657928.1old
257499319271134.6old
46216462088629371652.0old
1189298007650086394296212910077693735113.2old
42473851340526147266826509993319628093194922290192667926440870920964574700349265985080009020182263507473104344.22013-07-03 00:00:00
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Factored
No proof (small exponent)
2024-09-06George WoltmanPRP_PRP_PRP_PRP_5013
History
DateUserTypeResult
2024-09-06George WoltmanP-PRPM947/295130657/25749931927/4621646208862937/11892980076500863942962129100776937/42473851340526147266826509993319628093194922290192667926440870920964574700349265985080009020182263507473
PRP Cofactor
2000-08-01-anonymous-FFactor: 7599594327320786039