Fait général: 1257 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 1257 is a value of n for which f(s(n)) = f(n).
Culture générale: 1257 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: June 10th is the day in 1977 that James Earl Ray escapes from Brushy Mountain State Prison in Petros, Tennessee, but is recaptured on June 13.