James Pommersheim, Tim Marks, "Number Theory: A Lively Introduction with Proofs, Applications, and Stories" English | 2010 | ISBN: 0470424133 | PDF | pages: 783 | 31.9 mb
The Mathematics of Ciphers: Number Theory and RSA Cryptography by S. C. Coutinho English | January 15, 1999 | ISBN: 1568810822, 0367447606 | True PDF | 198 pages | 14.1 MB