Fait mathématique: 1778 is the largest number whose square has 5 digits.
Culture générale: 1778 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: November 12th is the day in 1978 that Pope John Paul II takes possession of his Cathedral Church, the Basilica of St. John Lateran, as the Bishop of Rome.