Fait général: 26403 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 26403 is an uninteresting number.
Culture générale: 26403 is an unremarkable number.
Date historique: April 14th is the day in 1294 that Temür, grandson of Kublai, is elected Khagan of the Mongols and Emperor of the Yuan Dynasty with the reigning titles Oljeitu and Chengzong.