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
7919Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
63353516.0old
4155564937211238.6old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000006059 / 9201
Estimated T-Level: 43.3
TF below 2^139 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver Kruse694DC08210CF03BC2013
Verified2017-10-12kkmrkkblmbrbk694DC08210CF03BC2383513
Verified2020-04-17Oliver KruseE3558E598B5F00562324153
Verified2024-02-03Wentao HuangE3558E598B5F00562631153
History
DateUserTypeResult
2024-02-03Wentao HuangC-PRP
M7919/63353/415556493721 : E3558E598B5F0056
PRP: Verified
PRP without proof (small exponent)
2023-05-23JacobZNF-PM1
B1=60000000000, B2=244568457101868900
2021-12-16Lisander ViaeneNF-PM1
B1=100000000
2020-04-17Oliver KruseC-PRP
M7919/63353/415556493721 : E3558E598B5F0056
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M7919/63353/415556493721 : 694DC08210CF03BC
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M7919/63353/415556493721 : 694DC08210CF03BC
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M7919/63353/415556493721 : 694DC08210CF03BC
PRP without proof (not generated)