Fait mathématique: 2081 is a number n for which n, n+2, n+6, and n+8 are all prime.
Culture générale: 2081 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: September 11th is the day in 1961 that Hurricane Carla strikes the Texas coast as a Category 4 hurricane, the second strongest storm ever to hit the state.