Compare 1949 vs 1987
| Property | 1949 | 1987 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 19491 | 19871 |
| Prime factorization | 1949 | 1987 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1949 | 1, 1987 |
| Number of properties | 8 | 6 |
| Additive primes | 156th | |
| Chen primes | 183rd | |
| Emirps | 95th | |
| Good primes | 62nd | |
| Harmonic primes | 110th | |
| Isolated primes | 181st | |
| Long primes | 115th | |
| Lucky primes | 70th | |
| Primes | 296th | 300th |
| Pythagorean primes | 144th | |
| Sexy primes (1st member) | 127th | |
| Sexy prime triplets (1st member) | 50th | |
| Twin primes (1st member) | 60th | |
| Roman numberals | MCMXLIX | MCMLXXXVII |
| Base 2 | 111100111012 | 111110000112 |
| Base 3 | 22000123 | 22011213 |
| Base 4 | 1321314 | 1330034 |
| Base 5 | 302445 | 304225 |
| Base 6 | 130056 | 131116 |
| Base 7 | 54537 | 55367 |
| Base 8 | 36358 | 37038 |
| Base 9 | 26059 | 26479 |
| Base 10 | 194910 | 198710 |
| Base 11 | 151211 | 154711 |
| Base 12 | 116512 | 119712 |
| Base 13 | b6c13 | b9b13 |
| Base 14 | 9d314 | a1d14 |
| Base 15 | 89e15 | 8c715 |
| Base 16 | 79d16 | 7c316 |