Fatto generale: 1683 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 1683 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 1683 is an unremarkable number.
Data storica: August 9th is the day in 1329 that Quilon, the first Indian Christian Diocese, is erected by Pope John XXII; the French-born Jordanus is appointed the first Bishop.