Do you like the number e? Then you might like this curious fact discovered by Aziz Inan of the University of Portland.
Every year on February 7 maths enthusiasts celebrate e day. That's because the first two digits of the number e are 2 and 7, and because February 7, written the American way with the month first, is 2/7.
The year 2018 saw a very special e day: February 7, 2018 is written as 2/7/18, and 2, 7, 1, and 8 represent the first four digits of e. This coincidence occurs only once a century!
But there is more: the calendar date that follows 2/7/18, namely 2/8/18, coincides with the next four digits of e. So 2/7/18 and 2/8/18 put side by side as 27182818 constitute the first eight digits of e. This property makes the once-a-century special e Day 2/7/18 even more special!
To find out more about the number e and some interesting properties of its digits, see this article by Aziz Inan. You may also want to read the following Plus articles.