Fatto generale: 1713 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 1713 is the number of 14-iamonds with holes.
Trivia: 1713 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: September 8th is the day in 1831 that William IV and Adelaide of Saxe-Meiningen are crowned King and Queen of the United Kingdom of Great Britain and Ireland.