Fatto generale: 983 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 983 is a Wedderburn-Etherington number.
Trivia: 983 is a boring number.
Data storica: September 9th is the day in 1971 that the four-day Attica Prison riot begins, which eventually results in 39 dead, most killed by state troopers retaking the prison.