Compare 1831 vs 1839
| Property | 1831 | 1839 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 18311 | 31 × 6131 |
| Prime factorization | 1831 | 3 × 613 |
| Divisors count | 2 | 4 |
| Divisors | 1, 1831 | 1, 3, 613, 1839 |
| Number of properties | 6 | 1 |
| Additive primes | 150th | |
| Emirps | 88th | |
| Harmonic primes | 101st | |
| Isolated primes | 171st | |
| Lucky primes | 67th | |
| Primes | 282nd | |
| Semiprimes | 530th | |
| Roman numberals | MDCCCXXXI | MDCCCXXXIX |
| Base 2 | 111001001112 | 111001011112 |
| Base 3 | 21112113 | 21120103 |
| Base 4 | 1302134 | 1302334 |
| Base 5 | 243115 | 243245 |
| Base 6 | 122516 | 123036 |
| Base 7 | 52247 | 52357 |
| Base 8 | 34478 | 34578 |
| Base 9 | 24549 | 24639 |
| Base 10 | 183110 | 183910 |
| Base 11 | 141511 | 142211 |
| Base 12 | 108712 | 109312 |
| Base 13 | aab13 | ab613 |
| Base 14 | 94b14 | 95514 |
| Base 15 | 82115 | 82915 |
| Base 16 | 72716 | 72f16 |