Hecho general: 8135 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 8135 is the 7^{th} central pentanomial coefficient.
Trivia: 8135 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fecha histórica: April 9th is the day in 1961 that the Pacific Electric Railway in Los Angeles, once the largest electric railway in the world, ends operations.