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
2129
Composite, with 2 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
9121613744162051144696584390747932106.2old
10806856618242071175151212780727133106.4old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000016550 / 16550
5511000000040830 / 40830
6026000000060471 / 105362
Estimated T-Level: 57.9 ⓘ
TF below 2^187 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Verified
No proof (small exponent)
2017-09-21Oliver Kruse3AD14D0091A309EA2013
Verified
No proof (small exponent)
2017-10-02kkmrkkblmbrbk3AD14D0091A309EA2013
Verified
No proof (small exponent)
2017-12-07ATH3AD14D0091A309EA280913
Verified
No proof (small exponent)
2020-04-17Oliver Kruse5B76FC991DD7BE75294853
Verified
No proof (small exponent)
2024-01-27Wentao Huang5B76FC991DD7BE75265253
History
DateUserTypeResult
2025-03-31masserNF-PP1Start=78/53, B1=5300000000, B2=5294700000000
2024-04-24masserNF-PM1B1=100000000000, B2=51148730208816240
2024-01-27Wentao HuangC-PRPM2129/108068566182420711751512127807271/91216137441620511446965843907479 : 5B76FC991DD7BE75
2020-04-17Oliver KruseC-PRPM2129/91216137441620511446965843907479/108068566182420711751512127807271 : 5B76FC991DD7BE75
2017-12-07ATHC-PRPM2129/91216137441620511446965843907479/108068566182420711751512127807271 : 3AD14D0091A309EA
2017-10-02kkmrkkblmbrbkC-PRPM2129/91216137441620511446965843907479/108068566182420711751512127807271 : 3AD14D0091A309EA
2017-09-21Oliver KruseC-PRPM2129/known_factors : 3AD14D0091A309EA
2016-09-08kkmrkkblmbrbkNF-PM1B1=500000000, B2=50000000000, E=12
1998-12-21-anonymous-NFno factor TF: 53-54
1998-12-13-anonymous-NFno factor TF: 53-54