general_fact: 16719 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 16719 is an uninteresting number.
trivia: 16719 is an unremarkable number.
historical_date: October 9th is the day in 1701 that the Collegiate School of Connecticut (later renamed Yale University) is chartered in Old Saybrook, Connecticut.