Fait général: 2566 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 2566 is a boring number.
Culture générale: 2566 is an uninteresting number.
Date historique: January 9th is the day in 2005 that Mahmoud Abbas wins the election to replace Yasser Arafat as President of the Palestinian National Authority.