Fatto matematico: 2471 is the smallest number that can not be formed using the numbers 2^{0}, 2^{1}, ... , 2^{6}, together with the symbols +, –, × and ÷.
Trivia: 2471 is an uninteresting number.
Data storica: October 6th is the day in 1849 that the execution of the 13 Martyrs of Arad after the Hungarian war of independence.