Fatto generale: 13503 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 13503 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 13503 is an unremarkable number.
Data storica: December 19th is the day in 1983 that the original FIFA World Cup trophy, the Jules Rimet Trophy, is stolen from the headquarters of the Brazilian Football Confederation in Rio de Janeiro.