Marin Mersenne 2^P-1
Username
Password
Forgot password?
Blue
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:





MnDetails
9437
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
20574330726491340.9old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
50440000006861 / 16550
Estimated T-Level: 47.1
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 KruseCC7272FB48DFECC61013
Verified
No proof (small exponent)
2017-10-12kkmrkkblmbrbkCC7272FB48DFECC61300513
Verified
No proof (small exponent)
2020-04-17Oliver Kruse685E6BA9AD83D3CF1801053
Verified
No proof (small exponent)
2024-07-01kkmrkkblmbrbk685E6BA9AD83D3CF1206453
History
DateUserTypeResult
2025-04-03masserNF-PP1Start=191/61, B1=1000000000, B2=999000000000
2024-07-01kkmrkkblmbrbkC-PRPM9437/2057433072649 : 685E6BA9AD83D3CF
2023-07-01JacobZNF-PM1B1=61000000000, B2=254995794420917550
2022-01-03ANONYMOUSNF-PM1B1=100000000, B2=111748790953800
2020-04-17Oliver KruseC-PRPM9437/2057433072649 : 685E6BA9AD83D3CF
2017-10-12kkmrkkblmbrbkC-PRPM9437/2057433072649 : CC7272FB48DFECC6
2017-09-21Oliver KruseC-PRPM9437/2057433072649 : CC7272FB48DFECC6
2017-09-21Oliver KruseC-PRPM9437/2057433072649 : CC7272FB48DFECC6