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

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Exponent Range:










MnStatusDetails
12043Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
4793499080693372859778632478.7old
17513037057385539350259302892890.52008-08-26 19:58:36
595424758828280628643421980812995.62008-08-29 02:24:29
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001342 / 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 Kruse9B32A8FE63E8749E3013
Verified2017-10-02kkmrkkblmbrbk9B32A8FE63E8749E3013
Verified2017-12-07ATH9B32A8FE63E8749E311913
Verified2020-04-17Oliver Kruse19DAE349BD441D9E3225553
Verified2023-05-19-Anonymous-19DAE349BD441D9E3608353
P-1 factors
DateFactorB1B2
2023-04-06839487270347265546686603006931947389404786635192407100000000000122192573512709696
History
DateUserTypeResult
2023-05-19-Anonymous-C-PRP
M12043/479349908069337285977863/1751303705738553935025930289/59542475882828062864342198081 : 19DAE349BD441D9E
PRP: Verified
PRP without proof (small exponent)
2023-04-06-Anonymous-F-PM1
Factors: 1751303705738553935025930289,479349908069337285977863 / (P-1, B1=100000000000, B2=122192573512709700)
2020-04-17Oliver KruseC-PRP
M12043/479349908069337285977863/1751303705738553935025930289/59542475882828062864342198081 : 19DAE349BD441D9E
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M12043/479349908069337285977863/1751303705738553935025930289/59542475882828062864342198081 : 9B32A8FE63E8749E
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M12043/479349908069337285977863/1751303705738553935025930289/59542475882828062864342198081 : 9B32A8FE63E8749E
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M12043/479349908069337285977863/1751303705738553935025930289/59542475882828062864342198081 : 9B32A8FE63E8749E
PRP without proof (not generated)
2016-09-08kkmrkkblmbrbkNF-PM1
B1=100000000, B2=10000000000, E=12
2008-08-29-Anonymous-F-ECM
Factor: 59542475882828062864342198081
2008-08-26-Anonymous-F-ECM
Factor: 1751303705738553935025930289