Marin Mersenne 2^P-1
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MnStatusDetails
865499Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
1730999720.7old
19889167031030.92008-07-16 09:27:59
77324151952702892880021432582.72017-03-31 11:14:28
ECM
DigitsB1Curves
2550000280 / 280
30250000100 / 640
Estimated T-Level: 25.8
TF below 2^81 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-28Oliver Kruse1428E48D790AD42A3013
Verified2017-10-17Oliver Kruse6CBCA158A010E8C8337850853
Verified2017-10-17Oliver Kruse1428E48D790AD42A370535313
Verified2017-10-17Oliver Kruse1428E48D790AD42A363813
Verified2017-11-04kkmrkkblmbrbk6CBCA158A010E8C8369877153
Verified2019-04-09kkmrkkblmbrbk1428E48D790AD42A34799913
History
DateUserTypeResult
2024-09-30timc995NF-PM1
B1=2000000, B2=44753558850
2019-04-09kkmrkkblmbrbkC-PRP
M865499/1730999/1988916703/7732415195270289288002143 : 1428E48D790AD42A
PRP: Verified
PRP without proof (small exponent)
2017-11-04kkmrkkblmbrbkC-PRP
M865499/1730999/1988916703/7732415195270289288002143 : 6CBCA158A010E8C8
PRP: Verified
PRP without proof (small exponent)
2017-10-17Oliver KruseC-PRP
M865499/1730999/1988916703/7732415195270289288002143 : 1428E48D790AD42A
PRP: Verified
PRP without proof (small exponent)
2017-10-17Oliver KruseC-PRP
M865499/1730999/1988916703/7732415195270289288002143 : 1428E48D790AD42A
PRP: Verified
PRP without proof (small exponent)
2017-10-17Oliver KruseC-PRP
M865499/1730999/1988916703/7732415195270289288002143 : 6CBCA158A010E8C8
PRP: Verified
PRP without proof (small exponent)
2017-09-28Oliver KruseC-PRP
M865499/1730999/1988916703/7732415195270289288002143 : 1428E48D790AD42A
PRP: Verified
PRP without proof (not generated)
2017-03-31TJAOIF-ECM
Factor: 7732415195270289288002143 / (ECM curve 75, B1=50000, B2=5000000)
2008-07-16J FeitsmaF
Factor: 1988916703