Fait mathématique: 5279 is the number permutations of {1,2,3,...,20} where adjacent numbers differ by no more than 2.
Culture générale: 5279 is an unremarkable number.
Date historique: June 14th is the day in 1940 that a group of 728 Polish political prisoners from Tarnów become the first residents of the Auschwitz concentration camp.