Hecho general: 5105 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 5105 is an unremarkable number.
Trivia: 5105 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fecha histórica: December 22nd is the day in 1920 that the GOELRO economic development plan is adopted by the 8th Congress of Soviets of the Russian SFSR.