Hecho matemático: 9803 is the number of different degree sequences possible for a graph with 19 edges.
Trivia: 9803 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fecha histórica: November 2nd is the day in 1973 that the Communist Party of India (Marxist) and the Communist Party of India form a 'United Front' in the state of Tripura.