Fait mathématique: 2690 is the number of terms in the 9^{th} derivative of f(f(f(f(f(x))))).
Culture générale: 2690 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: May 13th is the day in 1787 that Captain Arthur Phillip leaves Portsmouth, England, with eleven ships full of convicts (the "First Fleet") to establish a penal colony in Australia.