e day

A mathematical holiday
celebrated on February 7th

(because e is approximately 2.7, like February 7 written in month/day format)

e, also called Euler’s Number after the Swiss mathematician Leonhard Euler, is a very important constant that comes up in many different places in mathematics. It has an infinite number of digits, which can be calculated by summing:

Below we have the first 60.000 digits of e.

Let's find your birthday
(and then we'll show you something very interesting...)