Marin Mersenne 2^P-1
Username
Password
Forgot password?
White
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
1969031Factored
FactorDigitsBitsDate
3938063721.9old
19887213111030.92008-07-15 07:48:48
4889013560334102471858.82015-09-30 11:29:42
10841088861937031211959.92015-12-22 13:45:48
120561659428264946267772373.42021-11-26 03:30:40
ECM
DigitsB1Curves
2550000280 / 280
30250000106 / 640
Estimated T-Level: 25.8 ⓘ
TF below 2^81 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-09-30alpertron355F24365E96C2D84013
Verified (Factored)2017-10-20Oliver Kruse355F24365E96C2D8421250913
Verified2021-11-27_p95holder_14BCB52B7BD76DBE560782353
Verified2021-12-07MartimPaiva14BCB52B7BD76DBE557478953
History
DateUserTypeResult
2023-10-16USAFSSNF-PM1
B1=672000, B2=647447724
2022-08-12USAFSSNF-PM1
B1=132000, B2=134381520
2021-12-07Massimo Cappelli (ik5pwa)CERT
PRP Certification
Proof certified good
2021-12-07MartimPaivaC-PRP
M1969031/3938063/1988721311/488901356033410247/1084108886193703121/12056165942826494626777 : 14BCB52B7BD76DBE
PRP proof power = 7
PRP: Verified
Proof certified good
2021-11-27_p95holder_C-PRP
M1969031/3938063/1988721311/488901356033410247/1084108886193703121/12056165942826494626777 : 14BCB52B7BD76DBE
PRP: Verified
PRP without proof (not generated)
2021-11-26_p95holder_F-ECM
Factor: 12056165942826494626777 / (ECM curve 1, B1=50000, B2=5000000)
2017-10-20Oliver KruseC-PRP
M1969031/3938063/1988721311/488901356033410247/1084108886193703121 : 355F24365E96C2D8
PRP: Verified
PRP without proof (not generated)
2017-09-30alpertronC-PRP
M1969031/1084108886193703121/1988721311/3938063/488901356033410247 : 355F24365E96C2D8
PRP: Verified
PRP without proof (not generated)
2015-12-22TJAOIF
Factor: 1084108886193703121 / TF: 59-60
2015-09-30TJAOIF
Factor: 488901356033410247 / TF: 58-59
2008-07-15J FeitsmaF
Factor: 1988721311