Fatto generale: 404 is the HTTP status code for "Not found", perhaps the most famous HTTP status code.
Fatto matematico: 404 is the number of sided 10-hexes with holes.
Trivia: 404 is the HTTP status code for "Not found", perhaps the most famous HTTP status code.
Data storica: February 7th is the day in 1819 that Sir Thomas Stamford Raffles leaves Singapore after just taking it over, leaving it in the hands of William Farquhar.