STEM Inventory: Initiatives Serving K–16 Education in North Carolina

A Trillion Triangles

September 22, 2009 -- Mathematicians from North America, Europe, Australia, and South America have resolved the first one trillion cases of an ancient mathematics problem. The advance was made possible by a clever technique for multiplying large numbers. The numbers involved are so enormous that if their digits were written out by hand they would stretch to the moon and back. The biggest challenge was that these numbers could not even fit into the main memory of the available computers, so the researchers had to make extensive use of the computers' hard drives. Read more...

The knotted staircase (The Mathematical Tourist by Ivars Peterson

On-Line Encyclopedia of Integer Sequences (OEIS).

The Millennium Prize Problems - The Clay Mathematics Institute of Cambridge, Massachusetts (CMI)