Fait mathématique: 1137 is the maximum value of n so that there exist 7 denominations of stamps so that every postage from 1 to n can be paid for with at most 7 stamps.
Culture générale: 1137 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: February 10th is the day in 1954 that President Dwight Eisenhower warns against United States intervention in Vietnam.