Fait mathématique: 17915 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Culture générale: 17915 is a boring number.
Date historique: January 17th is the day in 1893 that the Citizen's Committee of Public Safety, led by Lorrin A. Thurston, overthrows the government of Queen Liliuokalani of the Kingdom of Hawaii.