Fait mathématique: 2313 is an uninteresting number.
Culture générale: 2313 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: May 1st is the day in 1987 that Pope John Paul II beatifies Edith Stein, a Jewish-born Carmelite nun who was gassed in the Nazi concentration camp at Auschwitz.