Fatto generale: 10253 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 10253 is a boring number.
Trivia: 10253 is an uninteresting number.
Data storica: January 26th is the day in 1905 that the world's largest diamond ever, the Cullinan weighing 3,106.75 carats (0.62135 kg), is found at the Premier Mine near Pretoria in South Africa.