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
12479Composite, with 4 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
99833516.6old
9508999723.22008-08-26 19:58:37
125289161926.92008-08-26 19:58:37
44874760523658491652.02008-08-26 19:58:37
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001251 / 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 Kruse573AA4DD04B3F5224013
Verified2017-10-02kkmrkkblmbrbk573AA4DD04B3F5224013
Verified2017-12-07ATH573AA4DD04B3F52241027613
Verified2020-04-17Oliver KruseD0126315997711DB41082053
Verified2024-07-01kkmrkkblmbrbkD0126315997711DB41203853
History
DateUserTypeResult
2024-07-01kkmrkkblmbrbkC-PRP
M12479/125289161/4487476052365849/9508999/99833 : D0126315997711DB
PRP: Verified
PRP without proof (small exponent)
2023-05-13-Anonymous-NF-PM1
B1=100000000000, B2=120417199046794650
2020-04-17Oliver KruseC-PRP
M12479/99833/9508999/125289161/4487476052365849 : D0126315997711DB
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M12479/99833/9508999/125289161/4487476052365849 : 573AA4DD04B3F522
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M12479/99833/9508999/125289161/4487476052365849 : 573AA4DD04B3F522
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M12479/known_factors : 573AA4DD04B3F522
PRP without proof (not generated)
2016-09-09kkmrkkblmbrbkNF-PM1
B1=100000000, B2=10000000000, E=12
2008-08-26-Anonymous-F-PM1
Factor: 4487476052365849
2008-08-26-Anonymous-F
Factor: 125289161
2008-08-26-Anonymous-F
Factor: 9508999