Marin Mersenne 2^P-1
Username
Password
Forgot password?
Blue
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:





MnDetails
1997
Composite, with 3 known prime factors. Cofactor is PRP (Probable-Prime).
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
395407618.6old
29823515976920702610232271.3old
34284971696984393126433062833507333108.1old
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Factored
No proof (small exponent)
2017-11-16kkmrkkblmbrbkPRP_PRP_PRP_PRP_3190013
History
DateUserTypeResult
2017-11-16kkmrkkblmbrbkP-PRPM1997/395407/2982351597692070261023/342849716969843931264330628335073
PRP Cofactor
2009-03-05-anonymous-F-ECMFactor: 342849716969843931264330628335073
2009-03-05-anonymous-F-ECMFactor: 2982351597692070261023