math_fact: 86786 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
trivia: 86786 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
historical_date: August 11th is the day in 1858 that the Eiger in the Bernese Alps is ascended for the first time by Charles Barrington accompanied by Christian Almer and Peter Bohren.