Euler's number

Euler (pronounced Oiler)'s number is an irrational number. Its main rival is pi and it is smaller than pi. The first few digits were in the pi page, and it is written as an e but does not count as an exponent. It has billions over billions that it is known as an irrational number. But even though it is big, remember that pi is bigger. It is not used in circles, though. That's why it is not really great at math sometimes.
Category:Irrational Numbers