What's the lowest note a Male Tenor can hit?

I'm able to go between E5 and F5 comfortably and while checking on the piano my lower notes were between A1 and F2 I'm pretty sure i was on key and I don't remember, but my vocal coach said my lowest was A but I don't remember which A. My friend says that not even bes or baritones can go that low. So I'm guessing if he's right I was doing it wrong.