Compare 143 vs 149
| Property | 143 | 149 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 111 × 131 | 1491 |
| Prime factorization | 11 × 13 | 149 |
| Divisors count | 4 | 2 |
| Divisors | 1, 11, 13, 143 | 1, 149 |
| Number of properties | 1 | 8 |
| Chen primes | 29th | |
| Emirps | 11th | |
| Good primes | 14th | |
| Harmonic primes | 12th | |
| Long primes | 13th | |
| Primes | 35th | |
| Pythagorean primes | 16th | |
| Semiprimes | 48th | |
| Twin primes (1st member) | 12th | |
| Roman numberals | CXLIII | CXLIX |
| Base 2 | 100011112 | 100101012 |
| Base 3 | 120223 | 121123 |
| Base 4 | 20334 | 21114 |
| Base 5 | 10335 | 10445 |
| Base 6 | 3556 | 4056 |
| Base 7 | 2637 | 3027 |
| Base 8 | 2178 | 2258 |
| Base 9 | 1689 | 1759 |
| Base 10 | 14310 | 14910 |
| Base 11 | 12011 | 12611 |
| Base 12 | bb12 | 10512 |
| Base 13 | b013 | b613 |
| Base 14 | a314 | a914 |
| Base 15 | 9815 | 9e15 |
| Base 16 | 8f16 | 9516 |