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
8297Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
61134156452221877284764600991245650075339128.8old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
50440000005575 / 16550
Estimated T-Level: 46.7
TF below 2^150 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-25Oliver Kruse4F7EC4D82321F2411013
Verified2017-09-25George Woltman4F7EC4D82321F2411685113
Verified2017-09-27Oliver Kruse4F7EC4D82321F2411013
Verified2020-04-17Oliver KruseFCDD1BF73544F6131164553
Verified2024-07-01kkmrkkblmbrbkFCDD1BF73544F6131166153
History
DateUserTypeResult
2024-07-01kkmrkkblmbrbkC-PRP
M8297/611341564522218772847646009912456500753 : FCDD1BF73544F613
PRP: Verified
PRP without proof (small exponent)
2023-08-30JacobZNF-PM1
B1=71000000000, B2=265422648792401100
2021-12-16Lisander ViaeneNF-PM1
B1=100000000
2020-04-17Oliver KruseC-PRP
M8297/611341564522218772847646009912456500753 : FCDD1BF73544F613
PRP: Verified
PRP without proof (small exponent)
2017-09-27Oliver KruseC-PRP
M8297/611341564522218772847646009912456500753 : 4F7EC4D82321F241
PRP: Verified
PRP without proof (not generated)
2017-09-25George WoltmanC-PRP
M8297/611341564522218772847646009912456500753 : 4F7EC4D82321F241
PRP: Verified
PRP without proof (not generated)
2017-09-25Oliver KruseC-PRP
M8297/611341564522218772847646009912456500753 : 4F7EC4D82321F241
PRP: Verified
PRP without proof (not generated)