Be careful, it’s believed ~40 days without food can kill you if you don’t take supplements. People have gone for much longer while taking supplements including salt.
https://en.wikipedia.org/wiki/1981_Irish_hunger_strike 45-73 days till death with most lasting 60 days.
Holger Meins lasted 58 days despite forced feeding. https://de.wikipedia.org/wiki/Holger_Meins
List is obviously a lot longer but they offer a great dataset