Compare 67 vs 77
| Property | 67 | 77 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 671 | 71 × 111 |
| Prime factorization | 67 | 7 × 11 |
| Divisors count | 2 | 4 |
| Divisors | 1, 67 | 1, 7, 11, 77 |
| Number of properties | 17 | 1 |
| Additive primes | 12th | |
| Chen primes | 17th | |
| Cousin primes (1st member) | 7th | |
| Good primes | 9th | |
| Harmonic primes | 6th | |
| Isolated primes | 6th | |
| Left-truncatable primes | 12th | |
| Lucky primes | 7th | |
| Primes | 19th | |
| Prime triplets (1st member) | 8th | |
| Semiprimes | 26th | |
| Sexy primes (1st member) | 13th | |
| Sexy primes (2nd member) | 12th | |
| Sexy prime quadrupletss (2nd member) | 4th | |
| Sexy prime triplets (1st member) | 9th | |
| Sexy prime triplets (2nd member) | 8th | |
| Solinas primes | 16th | |
| Super primes | 8th | |
| Roman numberals | LXVII | LXXVII |
| Base 2 | 10000112 | 10011012 |
| Base 3 | 21113 | 22123 |
| Base 4 | 10034 | 10314 |
| Base 5 | 2325 | 3025 |
| Base 6 | 1516 | 2056 |
| Base 7 | 1247 | 1407 |
| Base 8 | 1038 | 1158 |
| Base 9 | 749 | 859 |
| Base 10 | 6710 | 7710 |
| Base 11 | 6111 | 7011 |
| Base 12 | 5712 | 6512 |
| Base 13 | 5213 | 5c13 |
| Base 14 | 4b14 | 5714 |
| Base 15 | 4715 | 5215 |
| Base 16 | 4316 | 4d16 |