Fait mathématique: 23637 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Culture générale: 23637 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: September 17th is the day in 2001 that the New York Stock Exchange reopens for trading after the September 11 Attacks, the longest closure since the Great Depression.