Another famous irrational number is Euler’s number e named after the Swiss mathematician Leonhard Euler, often more simply referred to as the exponential number.

The number e crops up in a wide range of mathematical topics from calculus through to compound interest!

We will now take a look at the picture of e, to three decimal places.

e  = 2.718

Colourmetics Picture of e three decimals

e  = 2.718

We will now take a look at the picture of e, to four decimal places.

= 2.7183

Colourmetics Picture of e four decimals

e  = 2.7183

We will now take a look at the picture of e, to five decimal places.

= 2.71828

Colourmetics Picture of e five decimals

e  = 2.71828

Finally we will take a look at the picture of e, to six decimal places.

= 2.718281

Colourmetics Picture of e six decimals

e  = 2.718281