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
252877Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
4046033721.9old
638767303929.32008-07-21 09:15:02
3050984247607837911858.12014-08-22 10:16:07
ECM
DigitsB1Curves
2550000280 / 280
30250000616 / 640
Estimated T-Level: 29.8
TF below 2^94 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-22Oliver KruseC2DF6713B46E85183013
Verified2017-10-12kkmrkkblmbrbkC2DF6713B46E8518318504213
Verified2020-04-17Oliver Kruse80D757A1E459F110322094653
Verified2024-02-03Wentao Huang80D757A1E459F110315326853
History
DateUserTypeResult
2024-02-03slaurCERT
PRP Certification
Proof certified good
2024-02-03Wentao HuangC-PRP
M252877/4046033/638767303/305098424760783791 : 80D757A1E459F110
PRP proof power = 5
PRP: Verified
Proof certified good
2022-04-22Oliver KruseNF-PM1
B1=30000000, B2=10120247026890
2021-08-24Oliver KruseNF-PM1
B1=30000000, B2=3000000000, E=24
2020-04-17Oliver KruseC-PRP
M252877/4046033/638767303/305098424760783791 : 80D757A1E459F110
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M252877/4046033/638767303/305098424760783791 : C2DF6713B46E8518
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M252877/4046033/638767303/305098424760783791 : C2DF6713B46E8518
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M252877/4046033/638767303/305098424760783791 : C2DF6713B46E8518
PRP without proof (not generated)
2014-08-22TJAOIF-ECM
Factor: 305098424760783791
2008-07-21J FeitsmaF
Factor: 638767303