| #2 |  Prime Obsession
| 4.25 | 7 reads | |
| #3 |  The Code Book: The Science of Secrecy from Ancient Egypt to Quantum Cryptography
| 4.17 | 107 reads | |
| #4 |  Fermat's last theorem
| 4.08 | 76 reads | |
| #5 |  Uncle Petros and Goldbach's Conjecture
| 3.8 | 13 reads | |
| #6 |  The Language of God
| 3.84 | 20 reads |