Fait mathématique: 7770 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Culture générale: 7770 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: April 9th is the day in 1682 that Robert Cavelier de La Salle discovers the mouth of the Mississippi River, claims it for France and names it Louisiana.