Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
2265371Factored
FactorDigitsBitsDate
887366707420631446.3old
429220013100692783605653731447162341737121.72016-04-21 11:30:48
ECM
DigitsB1Curves
255000086 / 280
Estimated T-Level: 21.5
TF below 2^67 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-30alpertron54AE20E5FCAB6B8B2013
Verified2017-10-29Oliver Kruse54AE20E5FCAB6B8B2193082813
P-1 factors
DateFactorB1B2
2016-04-21429220013100692783605653731447162341750000015000000
History
DateUserTypeResult
2017-10-29Oliver KruseC-PRP
M2265371/88736670742063/4292200131006927836056537314471623417 : 54AE20E5FCAB6B8B
PRP: Verified
PRP without proof (not generated)
2017-09-30alpertronC-PRP
M2265371/4292200131006927836056537314471623417/88736670742063 : 54AE20E5FCAB6B8B
PRP: Verified
PRP without proof (not generated)
2016-04-21alpertronF-PM1
Factor: 4292200131006927836056537314471623417 / (P-1, B1=500000, B2=15000000, E=12)