Fait mathématique: 2471 is the smallest number that can not be formed using the numbers 2^{0}, 2^{1}, ... , 2^{6}, together with the symbols +, –, × and ÷.
Culture générale: 2471 is an unremarkable number.
Date historique: October 6th is the day in 1979 that Pope John Paul II becomes the first pontiff to visit the White House.