Novel by Cory Doctrow. Published by Tor Teen, 2008. This book has been published both in print (see WorldCat or Amazon to find a copy) and for free, online (at this link) under Creative Commons license. This is tagged with technology; online texts provide new opportunities for teachers and students.
By Richard Evan Schwartz. Natick, Mass.: A.K. Peters, 2010.
Children's book "presents the concepts of prime numbers and factoring in a novel and colorful way." -Richard Evan Schwartz