# Project Euler

This is a wonderful website offering a long list of interesting and challenging math and computer science problems.

There are many different kinds of problems to solve: some are purely mathematical in nature, and some would be considered more like pure computer science.

Some are easy (“*What is the 1001st prime number?*“), some seem moderately challenging (*“What is the sum of the digits of *?”), and some are, well, difficult (“*How many strong Achilles numbers are there?”).*

The problems are freely available, but it looks like you have to register to submit answers.

## 3 Comments

## Leandra Stewart · March 29, 2011 at 3:02 pm

How many have you solved?

This is so reminiscent of senior year math team competition questions

## MrHonner · March 30, 2011 at 9:10 pm

I haven’t solved enough to brag about. 🙂

And yes, very math team-y. Some of the comp sci questions in there are really interesting and worthy of investigation.

## Leandra Stewart · March 31, 2011 at 4:14 pm

I’ve found excel to be a great resource in figuring out the patterns of some of the problems.

I started it on the 29th and I’ve done 4, with three others partially solved.

Quite an interesting thing to do in my spare time