Fatto generale: 7443 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 7443 is a boring number.
Trivia: 7443 is an unremarkable number.
Data storica: May 17th is the day in 1914 that the Protocol of Corfu is signed recognising full autonomy to Northern Epirus under nominal Albanian sovereignty.