Fatto generale: 1871 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 1871 is a number n for which n, n+2, n+6, and n+8 are all prime.
Trivia: 1871 is an unremarkable number.
Data storica: February 13th is the day in 1979 that an intense windstorm strikes western Washington and sinks a 1/2-mile-long section of the Hood Canal Bridge.