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
14321Factored
FactorDigitsBitsDate
19707979508809570375272270.7old
8883175199455305749860119507332932106.12017-06-05 13:52:51
122740200331922834872504152710437798064940129.92022-01-24 07:55:50
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001265 / 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 KruseCBBA2115E0FAEBFB2013
Verified (Factored)2017-10-02kkmrkkblmbrbkCBBA2115E0FAEBFB2013
Verified (Factored)2017-12-07ATHCBBA2115E0FAEBFB2671513
Verified (Factored)2020-04-17Oliver KruseB96213B3C5BF84562761453
Verified2022-01-24Ethan O'ConnorB96213B3C5BF845631341653
P-1 factors
DateFactorB1B2
2022-01-24122740200331922834872504152710437798064910000000003088390743498060
2024-01-292418961353048716857948009382250626211486113769894593572815023100000000000122154521813133808
History
DateUserTypeResult
2024-01-29-Anonymous-F-PM1
Factors: 1227402003319228348725041527104377980649,1970797950880957037527 / (P-1, B1=100000000000, B2=122154521813133810)
2023-05-24JacobZNF-PM1
B1=7600000000, B2=30020805351537000
2022-01-24Ethan O'ConnorC-PRP
M14321/1970797950880957037527/88831751994553057498601195073329/1227402003319228348725041527104377980649 : B96213B3C5BF8456
PRP: Verified
PRP without proof (small exponent)
2022-01-24Ethan O'ConnorF-PM1
Factor: 1227402003319228348725041527104377980649 / (P-1, B1=1000000000, B2=3088390743498060)
2020-04-17Oliver KruseC-PRP
M14321/1970797950880957037527/88831751994553057498601195073329 : B96213B3C5BF8456
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M14321/1970797950880957037527/88831751994553057498601195073329 : CBBA2115E0FAEBFB
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M14321/1970797950880957037527/88831751994553057498601195073329 : CBBA2115E0FAEBFB
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M14321/1970797950880957037527/88831751994553057498601195073329 : CBBA2115E0FAEBFB
PRP without proof (not generated)
2017-06-05kkmrkkblmbrbkF-ECM
Factor: 88831751994553057498601195073329 / (ECM curve 391, B1=1000000, B2=100000000)