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

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MnStatusDetails
14957Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
119657616.9old
81160864874631342.92008-08-26 19:58:44
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001255 / 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 KruseF2AA28AD5CE21F072013
Verified2017-10-12kkmrkkblmbrbkF2AA28AD5CE21F07296713
Verified2020-04-17Oliver KruseBBDEE6EB2E304CDB2798653
Verified2024-07-01kkmrkkblmbrbkBBDEE6EB2E304CDB2491253
History
DateUserTypeResult
2024-07-01kkmrkkblmbrbkC-PRP
M14957/119657/8116086487463 : BBDEE6EB2E304CDB
PRP: Verified
PRP without proof (small exponent)
2024-05-21Anton RepkoNF-PM1
B1=1000000000000, B2=1401075893663576130
2022-02-18Ethan O'ConnorNF-PM1
B1=10000000000, B2=91244305394882640
2022-02-06Lisander ViaeneNF-PM1
B1=50000
2020-04-17Oliver KruseC-PRP
M14957/119657/8116086487463 : BBDEE6EB2E304CDB
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M14957/119657/8116086487463 : F2AA28AD5CE21F07
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M14957/119657/8116086487463 : F2AA28AD5CE21F07
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M14957/119657/8116086487463 : F2AA28AD5CE21F07
PRP without proof (not generated)
2008-08-26-Anonymous-F
Factor: 8116086487463