Hecho general: 4713 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 4713 is a value of n such that the n^{th} Cullen number is prime.
Trivia: 4713 is an uninteresting number.
Fecha histórica: November 25th is the day in 1343 that a tsunami, caused by the earthquake in the Tyrrhenian Sea, devastates Naples (Italy) and the Maritime Republic of Amalfi, among other places.