general_fact: 881 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 881 is a number n whose 5^{th} root has a decimal part that begins with the digits of n.
trivia: 881 is an uninteresting number.
historical_date: May 30th is the day in 1806 that Andrew Jackson kills Charles Dickinson in a duel after Dickinson had accused Jackson's wife of bigamy.