Hecho general: 12300 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 12300 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 12300 is an uninteresting number.
Fecha histórica: September 3rd is the day in 301 that San Marino, one of the smallest nations in the world and the world's oldest republic still in existence, is founded by Saint Marinus.