Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
14657Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
87943516.4old
610317481929.22008-08-26 19:58:43
820440233929.62008-08-26 19:58:43
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001259 / 9201
Estimated T-Level: 40.7
TF below 2^130 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver Kruse127853CA514A68B33013
Verified2017-10-12kkmrkkblmbrbk127853CA514A68B33719113
Verified2020-04-17Oliver Kruse8678F1F38A6C4EEC3403853
Verified2024-07-01kkmrkkblmbrbk8678F1F38A6C4EEC3371153
History
DateUserTypeResult
2024-07-01kkmrkkblmbrbkC-PRP
M14657/610317481/820440233/87943 : 8678F1F38A6C4EEC
PRP: Verified
PRP without proof (small exponent)
2024-03-07-Anonymous-NF-PM1
B1=100000000000, B2=122154521813133810
2023-05-26JacobZNF-PM1
B1=7400000000, B2=32522539163164050
2021-08-01ViliamFNF-PM1
B1=250000000, B2=42750000000
2020-04-17Oliver KruseC-PRP
M14657/87943/610317481/820440233 : 8678F1F38A6C4EEC
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M14657/87943/610317481/820440233 : 127853CA514A68B3
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M14657/87943/610317481/820440233 : 127853CA514A68B3
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M14657/87943/610317481/820440233 : 127853CA514A68B3
PRP without proof (not generated)
2008-08-26-Anonymous-F
Factor: 820440233
2008-08-26-Anonymous-F
Factor: 610317481