Mathematical fact: 881 is a number n whose 5^{th} root has a decimal part that begins with the digits of n.
Trivia: 881 is an unremarkable number.
Historical date: May 30th is the day in 1914 that the new and then largest Cunard ocean liner RMS Aquitania, 45,647 tons, sets sails on her maiden voyage from Liverpool, England to New York City.