Fait général: 83713 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 83713 is an unremarkable number.
Culture générale: 83713 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: March 13th is the day in 1988 that the Seikan Tunnel, the longest undersea tunnel in the world, opens between Aomori and Hakodate, Japan.