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

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Exponent Range:










MnStatusDetails
12613Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
4628733759778776606458774524776126420738125.12009-03-05 15:09:12
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001639 / 9201
Estimated T-Level: 40.9
TF below 2^131 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Unknown241D0
Verified (Factored)George Woltman5710DEAFAD70241D0
Verified (Factored)Brian J. Beesley5710DEAFAD70241D0
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver Kruse91CADDACAD2421FD1013
Verified2017-10-12kkmrkkblmbrbk91CADDACAD2421FD1746413
Verified2020-04-17Oliver KruseBE6940541DE089141444453
Verified2024-07-01kkmrkkblmbrbkBE6940541DE08914132753
History
DateUserTypeResult
2024-07-01kkmrkkblmbrbkC-PRP
M12613/46287337597787766064587745247761264207 : BE6940541DE08914
PRP: Verified
PRP without proof (small exponent)
2023-05-13Anton RepkoNF-PM1
B1=100000000000, B2=120417199046794650
2020-04-17Oliver KruseC-PRP
M12613/46287337597787766064587745247761264207 : BE6940541DE08914
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M12613/46287337597787766064587745247761264207 : 91CADDACAD2421FD
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M12613/46287337597787766064587745247761264207 : 91CADDACAD2421FD
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M12613/46287337597787766064587745247761264207 : 91CADDACAD2421FD
PRP without proof (not generated)
2009-03-05-Anonymous-F-ECM
Factor: 46287337597787766064587745247761264207