general_fact: 2308 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 2308 is the number of conjugacy classes of the alternating group A_{29}.
trivia: 2308 is an unremarkable number.
historical_date: April 26th is the day in 1989 that the deadliest tornado in world history strikes Central Bangladesh, killing upwards of 1,300, injuring 12,000, and leaving as many as 80,000 homeless.