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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
346751Composite, with 4 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
693503619.4old
1959670211531237.52008-07-21 09:17:22
32808164060035702071961.52015-02-06 11:15:58
6821195579828903322972169.22014-10-03 12:41:53
ECM
DigitsB1Curves
2550000280 / 280
30250000566 / 640
Estimated T-Level: 29.4
TF below 2^93 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-23Oliver Kruse551A7D9EB78365D04013
Verified2017-10-13Oliver Kruse551A7D9EB78365D043275213
Verified2017-12-13ATH551A7D9EB78365D047506613
Verified2020-04-18Oliver Kruse01398685764F5CFA415442353
Verified (Factored)2022-05-12Jorge Coveiro01398685764F5CFA126082853
Verified2024-07-13kkmrkkblmbrbk01398685764F5CFA411269553
History
DateUserTypeResult
2024-09-23yuriy_5-1NF-PM1
B1=12000002, B2=2124117455460
2024-07-13George WoltmanCERT
PRP Certification
Proof certified good
2024-07-13kkmrkkblmbrbkC-PRP
M346751/195967021153/3280816406003570207/682119557982890332297/693503 : 01398685764F5CFA
PRP proof power = 5
PRP: Verified
Proof certified good
2024-02-15Denial140NF-PM1
B1=1000000, B2=13147103970
2023-11-11Gabriel LignelliNF-PM1
B1=70000
2022-05-12Jorge CoveiroC-PRP
M346751/693503 : 01398685764F5CFA
PRP proof power = 5
PRP: Verified (Factored)
PRP proof never uploaded
2022-02-06Lisander ViaeneNF-PM1
B1=50000
2020-04-18Oliver KruseC-PRP
M346751/693503/195967021153/3280816406003570207/682119557982890332297 : 01398685764F5CFA
PRP: Verified
PRP without proof (small exponent)
2017-12-13ATHC-PRP
M346751/693503/195967021153/3280816406003570207/682119557982890332297 : 551A7D9EB78365D0
PRP: Verified
PRP without proof (small exponent)
2017-10-13Oliver KruseC-PRP
M346751/693503/195967021153/682119557982890332297/3280816406003570207 : 551A7D9EB78365D0
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M346751/known_factors : 551A7D9EB78365D0
PRP without proof (not generated)
2015-02-06TJAOIF-ECM
Factor: 3280816406003570207 / (ECM curve 32, B1=50000, B2=5000000)
2014-10-03TJAOIF-ECM
Factor: 682119557982890332297 / (ECM curve 33, B1=50000, B2=5000000)
2008-07-21J FeitsmaF
Factor: 195967021153