Hecho general: 71681 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 71681 is an uninteresting number.
Trivia: 71681 is an uninteresting number.
Fecha histórica: April 3rd is the day in 1888 that the first of 11 unsolved brutal murders of women committed in or near the impoverished Whitechapel district in the East End of London, occurs.