Fait mathématique: 5096 is the number of possible rook moves on a 14×14 chessboard.
Culture générale: 5096 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: December 13th is the day in 1979 that the Canadian Government of Prime Minister Joe Clark is defeated in the House of Commons, prompting the 1980 Canadian election.