Fait général: 4963 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 4963 is a boring number.
Culture générale: 4963 is an unremarkable number.
Date historique: August 2nd is the day in 1873 that the Clay Street Hill Railroad begins operating the first cable car in San Francisco's famous cable car system.