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
14207Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
20116248624982311650.8old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001266 / 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 KruseF731A772FF9B938A1013
Verified2017-10-12kkmrkkblmbrbkF731A772FF9B938A179513
Verified2020-04-17Oliver Kruse25A64FE349819D231831253
Verified2024-07-01kkmrkkblmbrbk25A64FE349819D2311390453
History
DateUserTypeResult
2024-07-01kkmrkkblmbrbkC-PRP
M14207/2011624862498231 : 25A64FE349819D23
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
M14207/2011624862498231 : 25A64FE349819D23
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M14207/2011624862498231 : F731A772FF9B938A
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M14207/2011624862498231 : F731A772FF9B938A
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M14207/2011624862498231 : F731A772FF9B938A
PRP without proof (not generated)