Hecho matemático: 8991 is the smallest number so that it and its successor are both the product of a prime and the 5^{th} power of a prime.
Trivia: 8991 is an uninteresting number.
Fecha histórica: August 12th is the day in 1985 that Japan Airlines Flight 123 crashes into Osutaka ridge in Gunma Prefecture, Japan, killing 520, to become the worst single-plane air disaster.