Fait mathématique: 67643 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Culture générale: 67643 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 1845 that Felix Mendelssohn's Violin Concerto receives its première performance in Leipzig with Ferdinand David as soloist.