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 an uninteresting number.
Data storica: September 8th is the day in 1810 that the Tonquin sets sail from New York Harbor with 33 employees of John Jacob Astor's newly created Pacific Fur Company on board.