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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
3285517Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
3170655325691238.2old
4457156290761719651692168.62022-04-09 09:23:55
ECM
DigitsB1Curves
25500009 / 280
Estimated T-Level: 20.2 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-11-03noknoD0A8C2E4251C6ED51013
Verified (Factored)2017-11-19Oliver KruseD0A8C2E4251C6ED51210707913
Verified2022-04-15Poao58857EFAC31F2FC62194414353
P-1 factors
DateFactorB1B2
2022-01-213170655325698000080000
2022-04-094457156290761719651691000000115661700
History
DateUserTypeResult
2022-04-15SRJ2877CERT
PRP Certification
Proof certified good
2022-04-15PoaoC-PRP
M3285517/317065532569/445715629076171965169 : 58857EFAC31F2FC6
PRP proof power = 7
PRP: Verified
Proof certified good
2022-04-09JossF-PM1
Factor: 445715629076171965169 / (P-1, B1=1000000, B2=115661700)
2022-01-21JossF-PM1
Factor: 317065532569 / (P-1, B1=80000, B2=80000)
2021-05-21JossNF
no factor from 2^67 to 2^68
2017-11-19Oliver KruseC-PRP
M3285517/317065532569 : D0A8C2E4251C6ED5
PRP: Verified (Factored)
PRP without proof (not generated)
2017-11-03noknoC-PRP
M3285517/317065532569 : D0A8C2E4251C6ED5
PRP: Verified (Factored)
PRP without proof (not generated)