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
23357Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
1275407049728917533105655624333096.7old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000004912 / 9201
Estimated T-Level: 42.7
TF below 2^137 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver Kruse2920667D5C85D70F1013
Verified2017-10-12kkmrkkblmbrbk2920667D5C85D70F1170513
Verified2020-04-17Oliver Kruse2022A69E2AB7B2771178253
Verified2024-07-01kkmrkkblmbrbk2022A69E2AB7B27711394453
History
DateUserTypeResult
2025-01-04masserNF-PP1
Start=134/29, B1=100000000, B2=99900000000
2024-12-30masserNF-PP1
Start=6/5, B1=100000000, B2=99900000000
2024-12-22masserNF-PP1
Start=2/7, B1=100000000, B2=99900000000
2024-07-01kkmrkkblmbrbkC-PRP
M23357/127540704972891753310565562433 : 2022A69E2AB7B277
PRP: Verified
PRP without proof (small exponent)
2024-02-19nordiNF-PM1
B1=8000000000, B2=2427250412837250
2023-05-07nordiNF-PM1
B1=8000000000
2020-04-17Oliver KruseC-PRP
M23357/127540704972891753310565562433 : 2022A69E2AB7B277
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M23357/127540704972891753310565562433 : 2920667D5C85D70F
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M23357/127540704972891753310565562433 : 2920667D5C85D70F
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M23357/127540704972891753310565562433 : 2920667D5C85D70F
PRP without proof (not generated)
2016-11-28kkmrkkblmbrbkNF-PM1
B1=500000000, B2=10000000000, E=12