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
9397
Composite, with 3 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
225529617.8old
2405633721.2old
48947496425333691652.1old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
50440000006738 / 16550
Estimated T-Level: 47.0
TF below 2^151 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors
ShiftTypeBase
Verified
No proof (small exponent)
2017-09-21Oliver Kruse4DB8EBFCE0FAC2843013
Verified
No proof (small exponent)
2017-10-12kkmrkkblmbrbk4DB8EBFCE0FAC2843513213
Verified
No proof (small exponent)
2020-04-17Oliver KruseB823ED21BD3087993640953
Verified
No proof (small exponent)
2024-07-01kkmrkkblmbrbkB823ED21BD3087993626153
History
DateUserTypeResult
2025-04-05masserNF-PP1Start=80/61, B1=1000000000, B2=999000000000
2024-07-01kkmrkkblmbrbkC-PRPM9397/225529/2405633/4894749642533369 : B823ED21BD308799
2023-07-03JacobZNF-PM1B1=62000000000, B2=254047854677867250
2022-01-03ANONYMOUSNF-PM1B1=100000000, B2=125405610
2020-04-17Oliver KruseC-PRPM9397/225529/2405633/4894749642533369 : B823ED21BD308799
2017-10-12kkmrkkblmbrbkC-PRPM9397/225529/2405633/4894749642533369 : 4DB8EBFCE0FAC284
2017-09-21Oliver KruseC-PRPM9397/225529/2405633/4894749642533369 : 4DB8EBFCE0FAC284
2017-09-21Oliver KruseC-PRPM9397/225529/2405633/4894749642533369 : 4DB8EBFCE0FAC284