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
14321
Composite, with 3 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
19707979508809570375272270.7old
8883175199455305749860119507332932106.12017-06-05 13:52:51
122740200331922834872504152710437798064940129.92022-01-24 07:55:50
P-1 factors
DateFactorsB1B2
2024-01-29No new factors discovered100000000000122154521813133808
2022-01-241227402003319228348725041527104377980649
10000000003088390743498060
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000003792 / 9201
Estimated T-Level: 42.1 ⓘ
TF below 2^135 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 KruseCBBA2115E0FAEBFB2013
Factored
No proof (small exponent)
2017-10-02kkmrkkblmbrbkCBBA2115E0FAEBFB2013
Factored
No proof (small exponent)
2017-12-07ATHCBBA2115E0FAEBFB2671513
Factored
No proof (small exponent)
2020-04-17Oliver KruseB96213B3C5BF84562761453
Verified
No proof (small exponent)
2022-01-24Ethan O'ConnorB96213B3C5BF845631341653
History
DateUserTypeResult
2025-02-14masserNF-PP1Start=172/43, B1=355000000, B2=354645000000
2025-02-08masserNF-PP1Start=2/7, B1=355000000, B2=354645000000
2025-01-19masserNF-PP1Start=6/5, B1=355000000, B2=354645000000
2024-01-29-anonymous-F-PM1Factors: 1227402003319228348725041527104377980649,1970797950880957037527 / B1=100000000000, B2=122154521813133810
2023-05-24JacobZNF-PM1B1=7600000000, B2=30020805351537000
2022-01-24Ethan O'ConnorC-PRPM14321/1970797950880957037527/88831751994553057498601195073329/1227402003319228348725041527104377980649 : B96213B3C5BF8456
2022-01-24Ethan O'ConnorF-PM1Factor: 1227402003319228348725041527104377980649 / B1=1000000000, B2=3088390743498060
2020-04-17Oliver KruseC-PRPM14321/1970797950880957037527/88831751994553057498601195073329 : B96213B3C5BF8456
2017-12-07ATHC-PRPM14321/1970797950880957037527/88831751994553057498601195073329 : CBBA2115E0FAEBFB
2017-10-02kkmrkkblmbrbkC-PRPM14321/1970797950880957037527/88831751994553057498601195073329 : CBBA2115E0FAEBFB
2017-09-21Oliver KruseC-PRPM14321/1970797950880957037527/88831751994553057498601195073329 : CBBA2115E0FAEBFB
2017-06-05kkmrkkblmbrbkF-ECMFactor: 88831751994553057498601195073329