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

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Exponent Range:










MnStatusDetails
12373Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
22825710411031.1old
234821475431134.52008-08-26 19:58:36
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 KruseB05BF8F607E186422013
Verified2017-10-12kkmrkkblmbrbkB05BF8F607E186422396513
Verified2020-04-17Oliver Kruse0C5831A0753BB8782959953
Verified2024-07-01kkmrkkblmbrbk0C5831A0753BB8782597053
History
DateUserTypeResult
2024-07-01kkmrkkblmbrbkC-PRP
M12373/2282571041/23482147543 : 0C5831A0753BB878
PRP: Verified
PRP without proof (small exponent)
2023-05-13-Anonymous-NF-PM1
B1=100000000000, B2=120417199046794650
2020-04-17Oliver KruseC-PRP
M12373/2282571041/23482147543 : 0C5831A0753BB878
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M12373/2282571041/23482147543 : B05BF8F607E18642
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M12373/2282571041/23482147543 : B05BF8F607E18642
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M12373/2282571041/23482147543 : B05BF8F607E18642
PRP without proof (not generated)
2016-09-09kkmrkkblmbrbkNF-PM1
B1=100000000, B2=10000000000, E=12
2008-08-26-Anonymous-F
Factor: 23482147543