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
14249Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
1208961249671236.8old
24075028282039508331961.12008-08-29 02:24:34
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001265 / 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 KruseE5557E4C998721252013
Verified2017-10-12kkmrkkblmbrbkE5557E4C998721252112413
Verified2020-04-17Oliver KruseEB202020274D20A82846153
Verified2024-07-01kkmrkkblmbrbkEB202020274D20A82413853
History
DateUserTypeResult
2024-07-01kkmrkkblmbrbkC-PRP
M14249/120896124967/2407502828203950833 : EB202020274D20A8
PRP: Verified
PRP without proof (small exponent)
2023-11-30-Anonymous-NF-PM1
B1=100000000000, B2=122815096988293710
2023-05-24JacobZNF-PM1
B1=7700000000, B2=32522539163164050
2022-01-24Ethan O'ConnorNF-PM1
B1=1000000000, B2=3088390743498060
2020-04-17Oliver KruseC-PRP
M14249/120896124967/2407502828203950833 : EB202020274D20A8
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M14249/120896124967/2407502828203950833 : E5557E4C99872125
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M14249/120896124967/2407502828203950833 : E5557E4C99872125
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M14249/120896124967/2407502828203950833 : E5557E4C99872125
PRP without proof (not generated)
2008-08-29-Anonymous-F-ECM
Factor: 2407502828203950833