The **Mathematical Association of America** maintains a blog dedicated to publishing trivia about numbers. Every working day, the editors of ** ****http://maanumberaday.blogspot.com/ **present a number along with its properties. As an example, last Friday’s number was 1117. This is a prime number. In fact, it is the smallest four-digit prime that consists of two (different) two-digit primes. My favorite fact: 1117 is the smallest four-digit Unholey prime. (Unholey numbers do not have holes in their digits.)

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Unholey numbers. That’s awesome.