Hecho matemático: 61863 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 61863 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fecha histórica: May 16th is the day in 1960 that Theodore Maiman operates the first optical laser, at Hughes Research Laboratories in Malibu, California.