Fait général: 20593 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 20593 is an uninteresting number.
Culture générale: 20593 is an uninteresting number.
Date historique: May 18th is the day in 1783 that First United Empire Loyalists reach Parrtown (later called Saint John), New Brunswick, Canada after leaving the United States.