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
239431Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
779587337929.5old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000170 / 1566
Estimated T-Level: 30.5
TF below 2^96 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-22Oliver Kruse9B81A646E71110CE1013
Verified2017-10-12kkmrkkblmbrbk9B81A646E71110CE120682113
Verified2020-04-17Oliver Kruse7C3F627A7B9294C917780853
Verified2024-02-03Wentao Huang7C3F627A7B9294C9120527253
History
DateUserTypeResult
2024-02-03Naegi MakotoCERT
PRP Certification
Proof certified good
2024-02-03Wentao HuangC-PRP
M239431/779587337 : 7C3F627A7B9294C9
PRP proof power = 5
PRP: Verified
Proof certified good
2022-04-05Oliver KruseNF-PM1
B1=30000000, B2=10120247026890
2021-07-18Oliver KruseNF-PM1
B1=30000000, B2=3000000000, E=24
2020-04-17Oliver KruseC-PRP
M239431/779587337 : 7C3F627A7B9294C9
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M239431/779587337 : 9B81A646E71110CE
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M239431/779587337 : 9B81A646E71110CE
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M239431/779587337 : 9B81A646E71110CE
PRP without proof (not generated)