Fatto matematico: 20135 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 20135 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: February 15th is the day in 1991 that the Visegrád Agreement, establishing cooperation to move toward free-market systems, is signed by the leaders of Czechoslovakia, Hungary and Poland.