Fatto generale: 15100 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 15100 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 15100 is an uninteresting number.
Data storica: May 4th is the day in 1859 that the Cornwall Railway opens across the Royal Albert Bridge linking the counties of Devon and Cornwall in England.