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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
17477Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
6063838096091239.1old
86776999717227184657032272.92008-10-16 23:57:27
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001279 / 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 KruseC7DB08C67F3970CA2013
Verified2017-10-12kkmrkkblmbrbkC7DB08C67F3970CA21048413
Verified2020-04-17Oliver Kruse4C115FD048E6E058286453
Verified2024-07-01kkmrkkblmbrbk4C115FD048E6E0582710753
History
DateUserTypeResult
2024-12-25masserNF-PP1
Start=150/53, B1=132000000, B2=131868000000
2024-12-17masserNF-PP1
Start=6/5, B1=132000000, B2=131868000000
2024-12-15masserNF-PP1
Start=2/7, B1=132000000, B2=131868000000
2024-07-01kkmrkkblmbrbkC-PRP
M17477/606383809609/8677699971722718465703 : 4C115FD048E6E058
PRP: Verified
PRP without proof (small exponent)
2023-04-11JacobZNF-PM1
B1=6100000000, B2=17387415196261110
2022-02-06Lisander ViaeneNF-PM1
B1=50000
2020-04-17Oliver KruseC-PRP
M17477/606383809609/8677699971722718465703 : 4C115FD048E6E058
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M17477/606383809609/8677699971722718465703 : C7DB08C67F3970CA
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M17477/606383809609/8677699971722718465703 : C7DB08C67F3970CA
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M17477/606383809609/8677699971722718465703 : C7DB08C67F3970CA
PRP: Verified
PRP without proof (not generated)
2008-10-16-Anonymous-F-ECM
Factor: 8677699971722718465703