| Next prime | 79 |
| Previous prime | 71 |
| Octal | (111)8 |
| Hexadecimal | (49)16 |
| Prime gap | 6 |
| 14th Sexy prime (the small number) | The big number is 79 . |
| 9th Prime of the Form 3n+1 | 52 + 3 * 42 |
| 9th Prime of the Form 4n+1 | 32 + 82 |
| 6th Emirp (reversible prime) | |
| 13th Left-truncatable prime | |
| 12th Right-truncatable prime | |
| 8th Two-sided prime |