Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
14923Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
11102713823.4old
3960045178071238.52008-08-26 19:58:44
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001258 / 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 Kruse9CDE3A61B011AB852013
Verified2017-10-12kkmrkkblmbrbk9CDE3A61B011AB852939313
Verified2020-04-17Oliver KruseA1D02605121C98A721447753
Verified2024-07-01kkmrkkblmbrbkA1D02605121C98A721197853
History
DateUserTypeResult
2024-07-01kkmrkkblmbrbkC-PRP
M14923/11102713/396004517807 : A1D02605121C98A7
PRP: Verified
PRP without proof (small exponent)
2024-03-07-Anonymous-NF-PM1
B1=100000000000, B2=122154521813133810
2023-05-27JacobZNF-PM1
B1=7300000000, B2=30020805351537000
2021-12-02Lisander ViaeneNF-PM1
B1=100000000, B2=114249978542700
2020-04-17Oliver KruseC-PRP
M14923/11102713/396004517807 : A1D02605121C98A7
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M14923/11102713/396004517807 : 9CDE3A61B011AB85
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M14923/11102713/396004517807 : 9CDE3A61B011AB85
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M14923/11102713/396004517807 : 9CDE3A61B011AB85
PRP without proof (not generated)
2008-08-26-Anonymous-F
Factor: 396004517807