Fait mathématique: 1617 is the maximum value of n so that there exist 6 denominations of stamps so that every postage from 1 to n can be paid for with at most 9 stamps.
Culture générale: 1617 is an unremarkable number.
Date historique: June 4th is the day in 1998 that Terry Nichols is sentenced to life in prison for his role in the Oklahoma City bombing.