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
14281Factored
FactorDigitsBitsDate
13938257823.7old
18056610791030.72008-08-26 19:58:42
1480736043473449278712167.02008-08-26 19:58:42
996606590877133500347547094308131103.02013-04-04 10:53:14
69417729582616044807140316725408068736119.12019-04-30 23:56:18
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001254 / 9201
Estimated T-Level: 40.7 ⓘ
TF below 2^130 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-09-21Oliver Kruse1347A7048D9489EF4013
Verified (Factored)2017-10-02kkmrkkblmbrbk1347A7048D9489EF4013
Verified (Factored)2017-12-07ATH1347A7048D9489EF4858813
Verified2019-05-01matzetoni147AB69B719AABB851046353
Verified2019-05-02Chang Chia-Tche147AB69B719AABB85303753
P-1 factors
DateFactorB1B2
2023-11-309966065908771335003475470943081100000000000122815096988293712
History
DateUserTypeResult
2023-11-30-Anonymous-F-PM1
Factor: 9966065908771335003475470943081 / (P-1, B1=100000000000, B2=122815096988293710)
2023-05-24JacobZNF-PM1
B1=7600000000, B2=30020805351537000
2021-08-27Seth_TrNF-PM1
B1=400000000
2019-05-02Chang Chia-TcheC-PRP
M14281/13938257/1805661079/148073604347344927871/9966065908771335003475470943081/694177295826160448071403167254080687 : 147AB69B719AABB8
PRP: Verified
PRP without proof (small exponent)
2019-05-01matzetoniC-PRP
M14281/13938257/1805661079/148073604347344927871/9966065908771335003475470943081/694177295826160448071403167254080687 : 147AB69B719AABB8
PRP: Verified
PRP without proof (small exponent)
2019-04-30Niels_Mache_NextcloudF-ECM
Factor: 694177295826160448071403167254080687 / (ECM curve 2, B1=3000000, B2=300000000)
2017-12-07ATHC-PRP
M14281/13938257/1805661079/148073604347344927871/9966065908771335003475470943081 : 1347A7048D9489EF
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M14281/13938257/1805661079/148073604347344927871/9966065908771335003475470943081 : 1347A7048D9489EF
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M14281/13938257/1805661079/148073604347344927871/9966065908771335003475470943081 : 1347A7048D9489EF
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M14281/13938257/1805661079/148073604347344927871/9966065908771335003475470943081 : 1347A7048D9489EF
PRP without proof (not generated)
2013-04-04BloodIceF-ECM
Factor: 9966065908771335003475470943081
2008-08-26-Anonymous-F-ECM
Factor: 148073604347344927871
2008-08-26-Anonymous-F
Factor: 1805661079