Chris K. Caldwell is a professor of mathematics and statistics at the University of Tennessee at Martin. He earned his PhD in Mathematics at the University of California at Berkeley and did his undergraduate work at California State University East Bay. His areas of research include prime number theory and the use of computers (especially the World Wide Web) to teach mathematics. G. L. Honaker, Jr. lives in Bristol, Virginia. A graduate of Virginia Intermont College, he has taught mathematics and science at a juvenile detention center for over 17 years. His enthusiasm for prime numbers is the driving force behind the online collection: Prime Curios! He also enjoys chess and teaching the solution to Rubik's Cube to those of all ages.