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
1447
Composite, with 4 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
57881515.8old
17543804231030.7old
1358707993920231871352472476.8old
32947600353593883070409361419363050924739128.0old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000016550 / 16550
5511000000040830 / 40830
6026000000046123 / 105362
Estimated T-Level: 57.2 ⓘ
TF below 2^185 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 Kruse4AB2C73624CC111F4013
Verified
No proof (small exponent)
2017-10-02kkmrkkblmbrbk4AB2C73624CC111F4013
Verified
No proof (small exponent)
2017-12-07ATH4AB2C73624CC111F451713
Verified
No proof (small exponent)
2020-04-17Oliver Kruse0E5B2397B9E72A664120153
Verified
No proof (small exponent)
2020-08-12_p95holder_0E5B2397B9E72A66413653
History
DateUserTypeResult
2021-07-20ViliamFNF-PP1Start=2/7, B1=1000000000, B2=221000000000
2021-03-27nordiNF-PM1B1=1000000000000, B2=2232843418649129478
2020-08-12_p95holder_C-PRPM1447/57881/1754380423/135870799392023187135247/329476003535938830704093614193630509247 : 0E5B2397B9E72A66
2020-04-17Oliver KruseC-PRPM1447/57881/1754380423/135870799392023187135247/329476003535938830704093614193630509247 : 0E5B2397B9E72A66
2017-12-07ATHC-PRPM1447/57881/1754380423/135870799392023187135247/329476003535938830704093614193630509247 : 4AB2C73624CC111F
2017-10-02kkmrkkblmbrbkC-PRPM1447/57881/1754380423/135870799392023187135247/329476003535938830704093614193630509247 : 4AB2C73624CC111F
2017-09-21Oliver KruseC-PRPM1447/known_factors : 4AB2C73624CC111F
2016-09-07kkmrkkblmbrbkNF-PM1B1=1000000000, B2=100000000000, E=12