Marin Mersenne 2^P-1
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MnStatusDetails
12983Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
45042530982565457722710649899135524936118.42009-03-05 15:09:13
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001389 / 9201
Estimated T-Level: 40.8
TF below 2^130 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Unknown0FF00
Verified (Factored)George Woltman8AF154ABB64B0FF00
Verified (Factored)Brian J. Beesley8AF154ABB64B0FF00
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver KruseF306AB81DAF187BC1013
Verified2017-10-12kkmrkkblmbrbkF306AB81DAF187BC11030113
Verified2020-04-17Oliver Kruse53E4C22DF22031651920253
Verified2024-07-01kkmrkkblmbrbk53E4C22DF22031651718153
P-1 factors
DateFactorB1B2
2023-10-10450425309825654577227106498991355249100000000000122154521813133808
History
DateUserTypeResult
2024-07-01kkmrkkblmbrbkC-PRP
M12983/450425309825654577227106498991355249 : 53E4C22DF2203165
PRP: Verified
PRP without proof (small exponent)
2023-10-10-Anonymous-F-PM1
Factor: 450425309825654577227106498991355249 / (P-1, B1=100000000000, B2=122154521813133810)
2023-05-16JacobZNF-PM1
B1=8500000000, B2=33523232658715800
2020-04-17Oliver KruseC-PRP
M12983/450425309825654577227106498991355249 : 53E4C22DF2203165
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M12983/450425309825654577227106498991355249 : F306AB81DAF187BC
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M12983/450425309825654577227106498991355249 : F306AB81DAF187BC
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M12983/450425309825654577227106498991355249 : F306AB81DAF187BC
PRP without proof (not generated)
2009-03-05-Anonymous-F-ECM
Factor: 450425309825654577227106498991355249