Hecho matemático: 2301 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 2301 is an unremarkable number.
Fecha histórica: April 19th is the day in 1809 that an Austrian corps is defeated by the forces of the Duchy of Warsaw in the Battle of Raszyn, part of the struggles of the Fifth Coalition.