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
12703
Composite: 4 known prime factors
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
127031617.0old
216754664353451958002779272684.22008-08-29 02:24:31
3140675771108775987132254764973098.02017-01-19 06:24:04
2956332314235500029329241479693412630854987296184150164.32026-01-13 17:31:18
P-1 factors
DateFactorsB1B2
2017-01-19314067577110877598713225476497
100000000000
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001465 / 9201
Estimated T-Level: 40.8 ⓘ
TF below 2^131 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 KruseD69536F4821B21053013
Factored
No proof (small exponent)
2017-10-02kkmrkkblmbrbkD69536F4821B21053013
Factored
No proof (small exponent)
2017-12-07ATHD69536F4821B21053960613
Factored
No proof (small exponent)
2020-04-17Oliver KruseBF0D31C9F5E61C4931119253
Factored
No proof (small exponent)
2023-05-24recluxBF0D31C9F5E61C493337553
History
DateUserTypeResult
2026-01-13Ryan PropperF-ECMFactor: 29563323142355000293292414796934126308549872961841
2025-03-11masserNF-PP1Start=120/19, B1=430000000, B2=429570000000
2025-02-17masserNF-PP1Start=6/5, B1=430000000, B2=429570000000
2025-01-17masserNF-PP1Start=2/7, B1=430000000, B2=429570000000
2023-05-24recluxC-PRPM12703/127031/21675466435345195800277927/314067577110877598713225476497 : BF0D31C9F5E61C49
2023-05-22-anonymous-NF-PM1B1=100000000000, B2=120417199046794650
2023-05-14JacobZNF-PM1B1=8700000000, B2=36024966470342850
2020-04-17Oliver KruseC-PRPM12703/127031/21675466435345195800277927/314067577110877598713225476497 : BF0D31C9F5E61C49
2017-12-07ATHC-PRPM12703/127031/21675466435345195800277927/314067577110877598713225476497 : D69536F4821B2105
2017-10-02kkmrkkblmbrbkC-PRPM12703/127031/21675466435345195800277927/314067577110877598713225476497 : D69536F4821B2105
2017-09-21Oliver KruseC-PRPM12703/127031/21675466435345195800277927/314067577110877598713225476497 : D69536F4821B2105
2017-01-19kkmrkkblmbrbkF-PM1Factor: 314067577110877598713225476497 / B1=10000000000
2008-08-29-anonymous-F-ECMFactor: 21675466435345195800277927