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:





MnDetails
8297
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
61134156452221877284764600991245650075339128.8old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
50440000005624 / 16550
Estimated T-Level: 46.7
TF below 2^150 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors
ShiftTypeBase
Verified
No proof (small exponent)
2017-09-25Oliver Kruse4F7EC4D82321F2411013
Verified
No proof (small exponent)
2017-09-25George Woltman4F7EC4D82321F2411685113
Verified
No proof (small exponent)
2017-09-27Oliver Kruse4F7EC4D82321F2411013
Verified
No proof (small exponent)
2020-04-17Oliver KruseFCDD1BF73544F6131164553
Verified
No proof (small exponent)
2024-07-01kkmrkkblmbrbkFCDD1BF73544F6131166153
History
DateUserTypeResult
2025-05-17masserNF-PP1Start=78/13, B1=1300000000, B2=1298700000000
2024-07-01kkmrkkblmbrbkC-PRPM8297/611341564522218772847646009912456500753 : FCDD1BF73544F613
2023-08-30JacobZNF-PM1B1=71000000000, B2=265422648792401100
2021-12-16ANONYMOUSNF-PM1B1=100000000
2020-04-17Oliver KruseC-PRPM8297/611341564522218772847646009912456500753 : FCDD1BF73544F613
2017-09-27Oliver KruseC-PRPM8297/611341564522218772847646009912456500753 : 4F7EC4D82321F241
2017-09-25George WoltmanC-PRPM8297/611341564522218772847646009912456500753 : 4F7EC4D82321F241
2017-09-25Oliver KruseC-PRPM8297/611341564522218772847646009912456500753 : 4F7EC4D82321F241
2003-02-09-anonymous-NF-PM1B1=4290000000
2002-12-25-anonymous-NFno factor TF: 1-57
2002-10-19-anonymous-NF-PM1B1=3221225472, B2=4290000000, E=48
2002-08-24-anonymous-NF-PM1B1=2147483648, B2=4290000000, E=48
2002-06-09-anonymous-NF-PM1B1=1073741824, B2=4290000000, E=48
2001-09-10-anonymous-NF-PM1B1=3000000000, B2=4290000000
2001-06-23-anonymous-NF-PM1B1=43000000, B2=4290000000
2001-02-11-anonymous-NF-PM1B1=1000000, B2=100000000
2000-08-01-anonymous-NFno factor TF: 1-56
2000-02-23-anonymous-NFno factor TF: 54-55
1999-12-30-anonymous-NFno factor TF: 53-54
1999-09-22-anonymous-NFno factor TF: 52-53