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
789227Factored
FactorDigitsBitsDate
19857555610405925205912270.82007-09-01 15:47:49
ECM
DigitsB1Curves
2550000280 / 280
30250000100 / 640
Estimated T-Level: 25.8 ⓘ
TF below 2^81 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-09-28Oliver Kruse66B605E6AED967A61013
Verified2017-10-13Oliver Kruse66B605E6AED967A6178507713
Verified2017-12-17ATH66B605E6AED967A6117113913
Unverified (Reliable)2020-04-21Oliver Kruse53D9E6D5B2743B__175689653
History
DateUserTypeResult
2020-04-21Oliver KruseC-PRP
M789227/1985755561040592520591 : 53D9E6D5B2743B__
PRP: Unverified (Reliable)
PRP without proof (small exponent)
2017-12-17ATHC-PRP
M789227/1985755561040592520591 : 66B605E6AED967A6
PRP: Unverified (Reliable)
PRP without proof (small exponent)
2017-10-13Oliver KruseC-PRP
M789227/1985755561040592520591 : 66B605E6AED967A6
PRP: Unverified (Reliable)
PRP without proof (small exponent)
2017-09-28Oliver KruseC-PRP
M789227/1985755561040592520591 : 66B605E6AED967A6
PRP: Unverified (Reliable)
PRP without proof (not generated)
2007-09-01Team_BunduF-ECM
Factor: 1985755561040592520591