Compare 1831 vs 1949
| Property | 1831 | 1949 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 18311 | 19491 |
| Prime factorization | 1831 | 1949 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1831 | 1, 1949 |
| Number of properties | 6 | 8 |
| Additive primes | 150th | 156th |
| Chen primes | 183rd | |
| Emirps | 88th | 95th |
| Harmonic primes | 101st | 110th |
| Isolated primes | 171st | |
| Long primes | 115th | |
| Lucky primes | 67th | |
| Primes | 282nd | 296th |
| Pythagorean primes | 144th | |
| Twin primes (1st member) | 60th | |
| Roman numberals | MDCCCXXXI | MCMXLIX |
| Base 2 | 111001001112 | 111100111012 |
| Base 3 | 21112113 | 22000123 |
| Base 4 | 1302134 | 1321314 |
| Base 5 | 243115 | 302445 |
| Base 6 | 122516 | 130056 |
| Base 7 | 52247 | 54537 |
| Base 8 | 34478 | 36358 |
| Base 9 | 24549 | 26059 |
| Base 10 | 183110 | 194910 |
| Base 11 | 141511 | 151211 |
| Base 12 | 108712 | 116512 |
| Base 13 | aab13 | b6c13 |
| Base 14 | 94b14 | 9d314 |
| Base 15 | 82115 | 89e15 |
| Base 16 | 72716 | 79d16 |