Fait mathématique: 81778 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Culture générale: 81778 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: November 25th is the day in 1120 that the White Ship sinks in the English Channel, drowning William Adelin, son of Henry I of England.