Compare 1831 vs 1838
| Property | 1831 | 1838 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 18311 | 21 × 9191 |
| Prime factorization | 1831 | 2 × 919 |
| Divisors count | 2 | 4 |
| Divisors | 1, 1831 | 1, 2, 919, 1838 |
| Number of properties | 6 | 1 |
| Additive primes | 150th | |
| Emirps | 88th | |
| Harmonic primes | 101st | |
| Isolated primes | 171st | |
| Lucky primes | 67th | |
| Primes | 282nd | |
| Semiprimes | 529th | |
| Roman numberals | MDCCCXXXI | MDCCCXXXVIII |
| Base 2 | 111001001112 | 111001011102 |
| Base 3 | 21112113 | 21120023 |
| Base 4 | 1302134 | 1302324 |
| Base 5 | 243115 | 243235 |
| Base 6 | 122516 | 123026 |
| Base 7 | 52247 | 52347 |
| Base 8 | 34478 | 34568 |
| Base 9 | 24549 | 24629 |
| Base 10 | 183110 | 183810 |
| Base 11 | 141511 | 142111 |
| Base 12 | 108712 | 109212 |
| Base 13 | aab13 | ab513 |
| Base 14 | 94b14 | 95414 |
| Base 15 | 82115 | 82815 |
| Base 16 | 72716 | 72e16 |