## Archive for September, 2009

### More prime phone numbers

Posted by: **Dave Richeson** on September 3, 2009

### Look who majored in mathematics

Posted by: **Dave Richeson** on September 1, 2009

A blog about math, puzzles, teaching, and academic technology

Posted by: **Dave Richeson** on September 3, 2009

Posted by: **Dave Richeson** on September 1, 2009