Fait mathématique: 1413 is the smallest number that can not be formed using the digits 0-7 at most once, together with the symbols + – × and ÷.
Culture générale: 1413 is an uninteresting number.
Date historique: November 13th is the day in 1841 that James Braid first sees a demonstration of animal magnetism, which leads to his study of the subject he eventually calls hypnotism.