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
348911Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
205808642471134.3old
193648106421961981148202712684.02014-10-10 12:43:56
98131886314941708421230726892893.02019-10-28 14:09:36
ECM
DigitsB1Curves
2550000280 / 280
30250000547 / 640
Estimated T-Level: 29.3
TF below 2^92 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-09-23Oliver Kruse04E122446887D14C2013
Verified (Factored)2017-10-13Oliver Kruse04E122446887D14C211698113
Verified (Factored)2017-12-13ATH04E122446887D14C225283813
Verified2019-10-29mnd99081778F823019DA332650153
Verified2019-10-30marssystems9081778F823019DA33407453
History
DateUserTypeResult
2024-10-07yuriy_5-1NF-PM1
B1=12000002, B2=2124117455460
2023-11-16USAFSSNF-PM1
B1=1350000, B2=5367308100
2022-02-06Lisander ViaeneNF-PM1
B1=50000
2019-10-30marssystemsC-PRP
M348911/20580864247/19364810642196198114820271/9813188631494170842123072689 : 9081778F823019DA
PRP: Verified
PRP without proof (small exponent)
2019-10-29mnd9C-PRP
M348911/20580864247/19364810642196198114820271/9813188631494170842123072689 : 9081778F823019DA
PRP: Verified
PRP without proof (small exponent)
2019-10-28TJAOIF-ECM
Factor: 9813188631494170842123072689 / (ECM curve 8, B1=250000, B2=25000000)
2017-12-13ATHC-PRP
M348911/20580864247/19364810642196198114820271 : 04E122446887D14C
PRP: Verified
PRP without proof (small exponent)
2017-10-13Oliver KruseC-PRP
M348911/20580864247/19364810642196198114820271 : 04E122446887D14C
PRP: Verified
PRP without proof (small exponent)
2017-09-23Oliver KruseC-PRP
M348911/20580864247/19364810642196198114820271 : 04E122446887D14C
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M348911/20580864247/19364810642196198114820271 : 04E122446887D14C
PRP without proof (not generated)
2014-10-10TJAOIF-ECM
Factor: 19364810642196198114820271 / (ECM curve 18, B1=50000, B2=5000000)