general_fact: 5306 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 5306 is the smallest number whose 9^{th} power starts with 4 identical digits.
trivia: 5306 is an uninteresting number.
historical_date: July 11th is the day in 1979 that America's first space station, Skylab, is destroyed as it re-enters the Earth's atmosphere over the Indian Ocean.