Compare 9 vs 37
| Property | 9 | 37 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 1 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 32 | 371 |
| Prime factorization | 3 × 3 | 37 |
| Divisors count | 3 | 2 |
| Divisors | 1, 3, 9 | 1, 37 |
| Number of properties | 1 | 18 |
| Chen primes | 12th | |
| Cousin primes (1st member) | 5th | |
| Cuban primes 1 | 3rd | |
| Emirps | 4th | |
| Good primes | 5th | |
| Isolated primes | 3rd | |
| Left-truncatable primes | 8th | |
| Lucky primes | 5th | |
| Pierpont primes | 8th | |
| Primes | 12th | |
| Prime triplets (1st member) | 6th | |
| Pythagorean primes | 5th | |
| Right-truncatable primes | 8th | |
| Semiprimes | 3rd | |
| Sexy primes (1st member) | 8th | |
| Sexy primes (2nd member) | 7th | |
| Sexy prime triplets (2nd member) | 5th | |
| Solinas primes | 11th | |
| Two-sided primes | 6th | |
| Roman numberals | IX | XXXVII |
| Base 2 | 10012 | 1001012 |
| Base 3 | 1003 | 11013 |
| Base 4 | 214 | 2114 |
| Base 5 | 145 | 1225 |
| Base 6 | 136 | 1016 |
| Base 7 | 127 | 527 |
| Base 8 | 118 | 458 |
| Base 9 | 109 | 419 |
| Base 10 | 910 | 3710 |
| Base 11 | 911 | 3411 |
| Base 12 | 912 | 3112 |
| Base 13 | 913 | 2b13 |
| Base 14 | 914 | 2914 |
| Base 15 | 915 | 2715 |
| Base 16 | 916 | 2516 |