Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
101287Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
17016217824.0old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000780 / 1566
Estimated T-Level: 32.5 ⓘ
TF below 2^103 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-09-21Oliver KruseA2C2C14674AB53931013
Verified2017-10-13kkmrkkblmbrbkA2C2C14674AB539313714613
Verified2020-04-17Oliver Kruse9EEFC141B6D71DFF11860653
Verified2022-04-15LordJulius9EEFC141B6D71DFF17501753
History
DateUserTypeResult
2022-12-08LordJuliusNF
no factor from 2^63 to 2^64
2022-12-08LordJuliusNF
no factor from 2^62 to 2^63
2022-04-15LordJuliusC-PRP
M101287/17016217 : 9EEFC141B6D71DFF
PRP: Verified
PRP without proof (small exponent)
2022-04-13LordJuliusNF
no factor from 2^61 to 2^62
2022-04-13LordJuliusNF
no factor from 2^60 to 2^61
2022-04-13LordJuliusNF
no factor from 2^59 to 2^60
2022-04-13LordJuliusNF
no factor from 2^58 to 2^59
2022-04-13LordJuliusNF
no factor from 2^57 to 2^58
2021-12-19Seth_TrNF-PM1
B1=1000000000, B2=6580284500790
2020-04-17Oliver KruseC-PRP
M101287/17016217 : 9EEFC141B6D71DFF
PRP: Verified
PRP without proof (small exponent)
2018-11-02J.R. AllenNF
no factor from 2^59 to 2^60
2018-11-02J.R. AllenNF
no factor from 2^58 to 2^59
2018-11-02J.R. AllenNF
no factor from 2^57 to 2^58
2018-10-25J.R. AllenNF
no factor from 2^52 to 2^57
2017-10-13kkmrkkblmbrbkC-PRP
M101287/17016217 : A2C2C14674AB5393
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M101287/17016217 : A2C2C14674AB5393
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M101287/17016217 : A2C2C14674AB5393
PRP without proof (not generated)
2016-11-02kkmrkkblmbrbkNF-PM1
B1=100000000, B2=2000000000, E=12