general_fact: 81149 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 81149 is an uninteresting number.
trivia: 81149 is an uninteresting number.
historical_date: March 6th is the day in 12 BC that the Roman Emperor Augustus is named Pontifex Maximus, incorporating the position into that of the Emperor.