- Alpertron
- Mathematical problems

These are the problems in this site:

**Table of numbers problem:**Unsolved mathematical problem about numbers in a rectangular grid. Requires Javascript.

**Brilliant numbers:**Interesting problem about products of two primes of the same size.

**Factors of Modified Fermat Numbers:**Factors of numbers of the form 4^{3n}+2^{3n}+1 and 4^{3n}-2^{3n}+1.