Fait général: 2173 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 2173 is an unremarkable number.
Culture générale: 2173 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: December 12th is the day in 1787 that Pennsylvania becomes the second state to ratify the United States Constitution five days after Delaware became the first.