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
390479Factored
FactorDigitsBitsDate
581972482649922644872065.7old
195762427870934057988005205546551745402784743140.52016-11-14 06:17:15
ECM
DigitsB1Curves
2550000280 / 280
30250000200 / 640
Estimated T-Level: 26.6
TF below 2^83 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-23Oliver Kruse963EEB7C875E56652013
Verified2017-09-24Oliver Kruse963EEB7C875E56652013
Verified2017-11-07kkmrkkblmbrbk963EEB7C875E566523271313
Unverified (Reliable)2020-04-18Oliver Kruse38AF984D8E4D9C__21309153
P-1 factors
DateFactorB1B2
2016-11-14195762427870934057988005205546551745402784750000000
History
DateUserTypeResult
2020-04-18Oliver KruseC-PRP
M390479/58197248264992264487/1957624278709340579880052055465517454027847 : 38AF984D8E4D9C__
PRP: Unverified (Reliable)
PRP without proof (small exponent)
2017-11-07kkmrkkblmbrbkC-PRP
M390479/58197248264992264487/1957624278709340579880052055465517454027847 : 963EEB7C875E5665
PRP: Unverified (Reliable)
PRP without proof (small exponent)
2017-09-23Oliver KruseC-PRP
M390479/58197248264992264487/1957624278709340579880052055465517454027847 : 963EEB7C875E5665
PRP: Unverified (Reliable)
PRP without proof (not generated)
2017-09-23Oliver KruseC-PRP
M390479/58197248264992264487/1957624278709340579880052055465517454027847 : 963EEB7C875E5665
PRP without proof (not generated)
2016-11-14kkmrkkblmbrbkF-PM1
Factor: 1957624278709340579880052055465517454027847 / (P-1, B1=5000000)