What is Project Euler?

Here is the description from their website:

Project Euler is a series of challenging mathematical/computer programming problems that will require more than just mathematical insights to solve. Although mathematics will help you arrive at elegant and efficient methods, the use of a computer and programming skills will be required to solve most problems.

Some of the problems are fairly trivial.  Some of them are  a little more complex.  I am interested in how different programming languages can offer different approaches to the same problem.  Occasionally, I might run programs on older machines to see how they fair or produce different versions of a solution to examine the effects of different optimizations. 

Code can almost always be better.  Tell me.   Help me make this better.  If you need a hint or want me to take a look at some source code, great.  Leave a comment or find @eulersolutions on Twitter and I will definitely get back to you.

Have fun.

   -Rich