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
13879
Composite, with 4 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
49229483633291342.2old
3125500632316550331645314453513098.02010-06-28 20:47:25
629627222180948848970039241999449899337122.22019-09-20 13:58:57
26037133169543674404094305221758221398339127.62023-06-15 17:32:04
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001449 / 9201
Estimated T-Level: 40.8 ⓘ
TF below 2^130 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 Kruse57299B30988CF1962013
Factored
No proof (small exponent)
2017-10-02kkmrkkblmbrbk57299B30988CF1962013
Factored
No proof (small exponent)
2017-12-07ATH57299B30988CF1962636613
Factored
No proof (small exponent)
2019-09-21mnd9CA2F516476DE02903822753
Factored
No proof (small exponent)
2019-09-22marssystemsCA2F516476DE02903231753
Verified
No proof (small exponent)
2023-06-15Denial140CA2F516476DE029041039553
History
DateUserTypeResult
2025-02-20masserNF-PP1Start=186/47, B1=430000000, B2=429570000000
2025-02-10masserNF-PP1Start=2/7, B1=430000000, B2=429570000000
2025-01-22masserNF-PP1Start=6/5, B1=430000000, B2=429570000000
2023-11-30-anonymous-NF-PM1B1=100000000000, B2=124499752678561260
2023-06-15Denial140C-PRPM13879/4922948363329/312550063231655033164531445351/6296272221809488489700392419994498993/260371331695436744040943052217582213983 : CA2F516476DE0290
2023-06-15Denial140F-ECMFactor: 260371331695436744040943052217582213983 / ECM curve 87, B1=3000000, B2=22972799850, Montgomery Sigma=5855450649594144
2023-05-22JacobZNF-PM1B1=7900000000, B2=32522539163164050
2023-02-11USAFSSNF-PM1B1=30000000, B2=2010341563230
2022-02-06ANONYMOUSNF-PM1B1=50000
2019-09-22marssystemsC-PRPM13879/4922948363329/312550063231655033164531445351/6296272221809488489700392419994498993 : CA2F516476DE0290
2019-09-21mnd9C-PRPM13879/4922948363329/312550063231655033164531445351/6296272221809488489700392419994498993 : CA2F516476DE0290
2019-09-20Niels_Mache_NextcloudF-ECMFactor: 6296272221809488489700392419994498993 / ECM curve 2, B1=3000000, B2=300000000, Montgomery Sigma=5013545590202797
2017-12-07ATHC-PRPM13879/4922948363329/312550063231655033164531445351 : 57299B30988CF196
2017-10-02kkmrkkblmbrbkC-PRPM13879/4922948363329/312550063231655033164531445351 : 57299B30988CF196
2017-09-21Oliver KruseC-PRPM13879/4922948363329/312550063231655033164531445351 : 57299B30988CF196
2017-09-21Oliver KruseC-PRPM13879/4922948363329/312550063231655033164531445351 : 57299B30988CF196
2010-06-28James HintzF-ECMFactor: 312550063231655033164531445351