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:










MnStatusDetails
2377477Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
67472797271032.7old
2421442710978192739932167.72018-02-13 17:10:19
ECM
DigitsB1Curves
2550000190 / 280
Estimated T-Level: 23.4
TF below 2^73 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-10-12Chang Chia-TcheF5FEE8FB6DEFDC2E1013
Verified (Factored)2017-11-02Oliver KruseF5FEE8FB6DEFDC2E1140671213
Verified2018-02-15Oliver Kruse3EA3EF35F28038FD213550953
Verified2018-02-17Chang Chia-Tche3EA3EF35F28038FD2227817453
History
DateUserTypeResult
2018-09-28alpertronNF-PM1
B1=2000000, B2=60000000, E=12
2018-02-17Chang Chia-TcheC-PRP
M2377477/6747279727/242144271097819273993 : 3EA3EF35F28038FD
PRP: Verified
PRP without proof (not generated)
2018-02-15Oliver KruseC-PRP
M2377477/6747279727/242144271097819273993 : 3EA3EF35F28038FD
PRP: Verified
PRP without proof (not generated)
2018-02-13Gordon SpenceF-ECM
Factor: 242144271097819273993 / (ECM curve 1, B1=50000, B2=5000000)
2017-11-02Oliver KruseC-PRP
M2377477/6747279727 : F5FEE8FB6DEFDC2E
PRP: Verified
PRP without proof (not generated)
2017-10-12Chang Chia-TcheC-PRP
M2377477/6747279727 : F5FEE8FB6DEFDC2E
PRP: Verified
PRP without proof (not generated)