Fatto generale: 5128 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 5128 is an unremarkable number.
Trivia: 5128 is a boring number.
Data storica: January 14th is the day in 1343 that Arnošt of Pardubice becomes the last bishop of Prague and, subsequently, the first Archbishop of Prague.