Fait mathématique: 99998 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Culture générale: 99998 is an uninteresting number.
Date historique: October 13th is the day in 1917 that the "Miracle of the Sun" is witnessed by an estimated 70,000 people in the Cova da Iria in Fátima, Portugal.