Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:





MnDetails
1549
Composite, with 2 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
1689208518174411547.3old
705186332460549984948321516612081461802988828133145606266219969293856970232.02017-09-24 04:36:23
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000016550 / 16550
5511000000040830 / 40830
60260000000105362 / 105362
65800000000156702 / 194238
Estimated T-Level: 64.0 ⓘ
TF below 2^208 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Factored
No proof (small exponent)
2017-09-21Oliver Kruse3D0E287FF421CC8C1013
Verified
No proof (small exponent)
2017-09-24Oliver KruseB6076B0E9FD76AF22013
Verified
No proof (small exponent)
2017-10-09Chang Chia-TcheB6076B0E9FD76AF22013
Verified
No proof (small exponent)
2017-10-13Oliver KruseB6076B0E9FD76AF2238213
Verified
No proof (small exponent)
2020-04-17Oliver KruseDC1ADF1DF69CA8E72102753
Verified
No proof (small exponent)
2020-08-12_p95holder_DC1ADF1DF69CA8E7261153
History
DateUserTypeResult
2021-07-21ViliamFNF-PP1Start=2/7, B1=1000000000, B2=221000000000
2021-03-27nordiNF-PM1B1=1000000000000, B2=2232843418649129478
2020-08-12_p95holder_C-PRPM1549/168920851817441/7051863324605499849483215166120814618029888281331456062662199692938569 : DC1ADF1DF69CA8E7
2020-04-17Oliver KruseC-PRPM1549/168920851817441/7051863324605499849483215166120814618029888281331456062662199692938569 : DC1ADF1DF69CA8E7
2017-10-13Oliver KruseC-PRPM1549/168920851817441/7051863324605499849483215166120814618029888281331456062662199692938569 : B6076B0E9FD76AF2
2017-10-09Chang Chia-TcheC-PRPM1549/known_factors : B6076B0E9FD76AF2
2017-09-24Oliver KruseC-PRPM1549/168920851817441/7051863324605499849483215166120814618029888281331456062662199692938569 : B6076B0E9FD76AF2
2017-09-24-anonymous-F-ECMFactor: 7051863324605499849483215166120814618029888281331456062662199692938569
2017-09-21Oliver KruseC-PRPM1549/168920851817441 : 3D0E287FF421CC8C
2017-09-21Oliver KruseC-PRPM1549/168920851817441 : 3D0E287FF421CC8C
2016-09-07kkmrkkblmbrbkNF-PM1B1=1000000000, B2=100000000000, E=12
2003-06-01-anonymous-FFactor: 168920851817441
2003-06-01-anonymous-FFactor: 168920851817441
2000-02-23-anonymous-FFactor: 168920851817441
1999-05-02-anonymous-FFactor: 168920851817441
1999-03-26-anonymous-FFactor: 168920851817441
1999-02-14-anonymous-FFactor: 168920851817441