Compare 9 vs 41
| Property | 9 | 41 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 1 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 32 | 411 |
| Prime factorization | 3 × 3 | 41 |
| Divisors count | 3 | 2 |
| Divisors | 1, 3, 9 | 1, 41 |
| Number of properties | 1 | 18 |
| Additive primes | 8th | |
| Centered square primes | 3rd | |
| Chen primes | 13th | |
| Cousin primes (2nd member) | 5th | |
| Good primes | 6th | |
| Harmonic primes | 5th | |
| Primes | 13th | |
| Prime triplets (1st member) | 7th | |
| Prime triplets (2nd member) | 6th | |
| Proth primes | 5th | |
| Pythagorean primes | 6th | |
| Semiprimes | 3rd | |
| Sexy primes (1st member) | 9th | |
| Sexy prime quadrupletss (1st member) | 3rd | |
| Sexy prime triplets (1st member) | 6th | |
| Solinas primes | 12th | |
| Sophie germain primes | 7th | |
| Super primes | 6th | |
| Twin primes (1st member) | 6th | |
| Roman numberals | IX | XLI |
| Base 2 | 10012 | 1010012 |
| Base 3 | 1003 | 11123 |
| Base 4 | 214 | 2214 |
| Base 5 | 145 | 1315 |
| Base 6 | 136 | 1056 |
| Base 7 | 127 | 567 |
| Base 8 | 118 | 518 |
| Base 9 | 109 | 459 |
| Base 10 | 910 | 4110 |
| Base 11 | 911 | 3811 |
| Base 12 | 912 | 3512 |
| Base 13 | 913 | 3213 |
| Base 14 | 914 | 2d14 |
| Base 15 | 915 | 2b15 |
| Base 16 | 916 | 2916 |