Bookmarks (math)

The Largest Known Primes
The 5,000 largest known prime numbers including when it was discovered and who discovered it.
A collection of polygons rendered in WebGL.
The Library of Babel
Every possible combination of the english alphabet, pre-computed to result in everything that has ever been and will ever be said.
Someone's interesting personal site.
Daniel J. Bernstein's personal webpage that has lots of cryptography research papers, algorithm implementations, and general information. He also really hates United Airlines lol.