Fait général: 1583 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 1583 is an uninteresting number.
Culture générale: 1583 is an uninteresting number.
Date historique: May 1st is the day in 1971 that Amtrak (the National Railroad Passenger Corporation) takes over operation of U.S. passenger rail service.