math_fact: 13857 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
trivia: 13857 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
historical_date: December 8th is the day in 2004 that the Cuzco Declaration is signed in Cuzco, Peru, establishing the South American Community of Nations.