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:










MnStatusDetails
1447Factored
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
6026000000020213 / 105362
Estimated T-Level: 56.0 ⓘ
TF below 2^181 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-09-21Oliver Kruse4AB2C73624CC111F4013
Verified2017-10-02kkmrkkblmbrbk4AB2C73624CC111F4013
Verified2017-12-07ATH4AB2C73624CC111F451713
Verified2020-04-17Oliver Kruse0E5B2397B9E72A664120153
Verified2020-08-12_p95holder_0E5B2397B9E72A66413653
History
DateUserTypeResult
2021-07-20ViliamFNF-PP1
Start=2/7, B1=1000000000, B2=221000000000
2021-03-27nordiNF-PM1
B1=1000000000000, B2=2232843418649129478
2020-08-12_p95holder_C-PRP
M1447/57881/1754380423/135870799392023187135247/329476003535938830704093614193630509247 : 0E5B2397B9E72A66
PRP: Verified
PRP without proof (small exponent)
2020-04-17Oliver KruseC-PRP
M1447/57881/1754380423/135870799392023187135247/329476003535938830704093614193630509247 : 0E5B2397B9E72A66
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M1447/57881/1754380423/135870799392023187135247/329476003535938830704093614193630509247 : 4AB2C73624CC111F
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M1447/57881/1754380423/135870799392023187135247/329476003535938830704093614193630509247 : 4AB2C73624CC111F
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M1447/known_factors : 4AB2C73624CC111F
PRP without proof (not generated)
2016-09-07kkmrkkblmbrbkNF-PM1
B1=1000000000, B2=100000000000, E=12