Fait mathématique: 5283 is an uninteresting number.
Culture générale: 5283 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: June 18th is the day in 1983 that Mona Mahmudnizhad together with nine other Bahá'í women, is sentenced to death and hanged in Shiraz, Iran because of her Bahá'í Faith.