Fatto matematico: 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.
Trivia: 1137 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: February 10th is the day in 1981 that a fire at the Las Vegas Hilton hotel-casino kills eight and injures 198.