general_fact: 73190 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 73190 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
trivia: 73190 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
historical_date: May 21st is the day in 1936 that Sada Abe is arrested after wandering the streets of Tokyo for days with her dead lover's severed genitals in her hand.