Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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Exponent Range:










MnStatusDetails
12703Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
127031617.0old
216754664353451958002779272684.22008-08-29 02:24:31
3140675771108775987132254764973098.02017-01-19 06:24:04
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001267 / 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
Verified2017-09-21Oliver KruseD69536F4821B21053013
Verified2017-10-02kkmrkkblmbrbkD69536F4821B21053013
Verified2017-12-07ATHD69536F4821B21053960613
Verified2020-04-17Oliver KruseBF0D31C9F5E61C4931119253
Verified2023-05-24recluxBF0D31C9F5E61C493337553
P-1 factors
DateFactorB1B2
2017-01-19314067577110877598713225476497100000000000
History
DateUserTypeResult
2023-05-24recluxC-PRP
M12703/127031/21675466435345195800277927/314067577110877598713225476497 : BF0D31C9F5E61C49
PRP: Verified
PRP without proof (small exponent)
2023-05-22-Anonymous-NF-PM1
B1=100000000000, B2=120417199046794650
2023-05-14JacobZNF-PM1
B1=8700000000, B2=36024966470342850
2020-04-17Oliver KruseC-PRP
M12703/127031/21675466435345195800277927/314067577110877598713225476497 : BF0D31C9F5E61C49
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M12703/127031/21675466435345195800277927/314067577110877598713225476497 : D69536F4821B2105
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M12703/127031/21675466435345195800277927/314067577110877598713225476497 : D69536F4821B2105
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M12703/127031/21675466435345195800277927/314067577110877598713225476497 : D69536F4821B2105
PRP without proof (not generated)
2017-01-19kkmrkkblmbrbkF-PM1
Factor: 314067577110877598713225476497 / (P-1, B1=10000000000)
2008-08-29-Anonymous-F-ECM
Factor: 21675466435345195800277927