Fatto generale: 2591 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 2591 is an uninteresting number.
Trivia: 2591 is a boring number.
Data storica: February 3rd is the day in 1998 that Karla Faye Tucker is executed in Texas becoming the first woman executed in the United States since 1984.