Fait général: 8317 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 8317 is the number of trees on 33 vertices with diameter 4.
Culture générale: 8317 is an uninteresting number.
Date historique: October 8th is the day in 1956 that New York Yankees's Don Larsen pitched the only perfect game in a World Series; one of only 20 perfect games in MLB history.