What is the cephalopod with the longest lifetime?

According to Smithsonian data, Nautilus can live more than 15 years.
Cephalopods - National Zoo



Slowy but with its advantages, here is a Nautilus.

Sill looking for more data, because I love exceptions, when I find anyone, I will put it here.

Edit #1:
Though cephalopods have very short life expectancy, on average from 6 months to 2 years, it has been discovered that Graneledone boreopacifica females can live for more than 53 months. In fact thiese 53 months is what a female spent caring her eggs before they hatch.
Source:
Longest-Living Octopus Found, Guards Eggs for Record 4.5 Years