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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
9758857Factored
FactorDigitsBitsDate
120749045872634412412063.4old
7515912407663560253279592479.32022-05-03 17:09:22
ECM
DigitsB1Curves
255000067 / 280
Estimated T-Level: 21.2 ⓘ
TF below 2^65 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2019-10-22mnd9B3D8D3D92B380C1B1226065453
Verified (Factored)2020-12-29kutensB3D8D3D92B380C1B1100185853
Verified2022-05-04riccardo ubertiB3D8D3D92B380C1B2231996553
History
DateUserTypeResult
2022-05-14riccardo ubertiNF-PM1
B1=7000000, B2=27210573390
2022-05-04ky0urakuCERT
PRP Certification
Proof certified good
2022-05-04riccardo ubertiC-PRP
M9758857/12074904587263441241/751591240766356025327959 : B3D8D3D92B380C1B
PRP proof power = 8
PRP: Verified
Proof certified good
2022-05-03riccardo ubertiF-PP1
Start=6/5, B1=2300000, B2=60000000, Factor: 751591240766356025327959
2022-04-27riccardo ubertiNF-PP1
Start=2/7, B1=2000000, B2=50000000
2020-12-29riccardo ubertiCERT
PRP Certification
Proof certified good
2020-12-29kutensC-PRP
M9758857/12074904587263441241 : B3D8D3D92B380C1B
PRP proof power = 8
PRP: Verified (Factored)
Proof certified good
2019-10-22mnd9C-PRP
M9758857/12074904587263441241 : B3D8D3D92B380C1B
PRP: Verified (Factored)
PRP without proof (not generated)