Fatto generale: 7003 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 7003 is the number of graphs with 9 vertices that have 8 automorphisms.
Trivia: 7003 is an uninteresting number.
Data storica: March 4th is the day in 1985 that the Food and Drug Administration approves a blood test for AIDS, used since then for screening all blood donations in the United States.