Compare 1943 vs 1949
| Property | 1943 | 1949 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 291 × 671 | 19491 |
| Prime factorization | 29 × 67 | 1949 |
| Divisors count | 4 | 2 |
| Divisors | 1, 29, 67, 1943 | 1, 1949 |
| Number of properties | 1 | 8 |
| Additive primes | 156th | |
| Chen primes | 183rd | |
| Emirps | 95th | |
| Harmonic primes | 110th | |
| Long primes | 115th | |
| Primes | 296th | |
| Pythagorean primes | 144th | |
| Semiprimes | 561st | |
| Twin primes (1st member) | 60th | |
| Roman numberals | MCMXLIII | MCMXLIX |
| Base 2 | 111100101112 | 111100111012 |
| Base 3 | 21222223 | 22000123 |
| Base 4 | 1321134 | 1321314 |
| Base 5 | 302335 | 302445 |
| Base 6 | 125556 | 130056 |
| Base 7 | 54447 | 54537 |
| Base 8 | 36278 | 36358 |
| Base 9 | 25889 | 26059 |
| Base 10 | 194310 | 194910 |
| Base 11 | 150711 | 151211 |
| Base 12 | 115b12 | 116512 |
| Base 13 | b6613 | b6c13 |
| Base 14 | 9cb14 | 9d314 |
| Base 15 | 89815 | 89e15 |
| Base 16 | 79716 | 79d16 |