Fatto matematico: 2689 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 2689 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: May 12th is the day in 1191 that Richard I of England marries Berengaria of Navarre who is crowned Queen consort of England the same day.