Hecho matemático: 29981 is an unremarkable number.
Trivia: 29981 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fecha histórica: January 30th is the day in 1982 that Richard Skrenta writes the first PC virus code, which is 400 lines long and disguised as an Apple boot program called "Elk Cloner".