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
12589
Composite, with 5 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
142675417271133.7old
71933993062701080171962.62008-08-29 02:24:31
4965873855754618439805992347693098.62008-10-25 20:59:11
20845273139774545073326254441171133107.42017-02-03 00:45:28
1324595312301279612937517615971682727149884744143.22026-01-13 03:52:48
P-1 factors
DateFactorsB1B2
2023-05-21No new factors discovered100000000000120417199046794656
2017-02-03208452731397745450733262544411711
10000000000205711343735730
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001453 / 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 Kruse2F1FD11CBBB7A5A54013
Factored
No proof (small exponent)
2017-10-02kkmrkkblmbrbk2F1FD11CBBB7A5A54013
Factored
No proof (small exponent)
2017-12-07ATH2F1FD11CBBB7A5A54178413
Factored
No proof (small exponent)
2020-04-17Oliver Kruse1DCBC2E7AFC8FBF34492553
Factored
No proof (small exponent)
2024-06-19Dobri1DCBC2E7AFC8FBF34986253
Verified
No proof (small exponent)
2026-01-20Dobri1DCBC2E7AFC8FBF35667953
History
DateUserTypeResult
2026-01-20DobriC-PRPM12589/14267541727/7193399306270108017/496587385575461843980599234769/208452731397745450733262544411711/13245953123012796129375176159716827271498847 : 1DCBC2E7AFC8FBF3
2026-01-13Ryan PropperF-ECMFactor: 13245953123012796129375176159716827271498847
2025-03-13masserNF-PP1Start=171/13, B1=430000000, B2=429570000000
2025-02-18masserNF-PP1Start=6/5, B1=430000000, B2=429570000000
2025-01-18masserNF-PP1Start=2/7, B1=430000000, B2=429570000000
2024-06-19DobriC-PRPM12589/14267541727/7193399306270108017/496587385575461843980599234769/208452731397745450733262544411711 : 1DCBC2E7AFC8FBF3
2023-05-21-anonymous-F-PM1Factors: 7193399306270108017,208452731397745450733262544411711 / B1=100000000000, B2=120417199046794650
2020-04-17Oliver KruseC-PRPM12589/14267541727/7193399306270108017/496587385575461843980599234769/208452731397745450733262544411711 : 1DCBC2E7AFC8FBF3
2017-12-07ATHC-PRPM12589/14267541727/7193399306270108017/496587385575461843980599234769/208452731397745450733262544411711 : 2F1FD11CBBB7A5A5
2017-10-02kkmrkkblmbrbkC-PRPM12589/14267541727/7193399306270108017/496587385575461843980599234769/208452731397745450733262544411711 : 2F1FD11CBBB7A5A5
2017-09-21Oliver KruseC-PRPM12589/14267541727/7193399306270108017/496587385575461843980599234769/208452731397745450733262544411711 : 2F1FD11CBBB7A5A5
2017-02-03kkmrkkblmbrbkF-PM1Factor: 208452731397745450733262544411711 / B1=10000000000, B2=205711343735730
2008-10-25Will EdgingtonF-ECMFactor: 496587385575461843980599234769
2008-08-29-anonymous-F-ECMFactor: 7193399306270108017