Compare 1831 vs 1840
| Property | 1831 | 1840 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 6 |
| Prime factorization | 18311 | 24 × 51 × 231 |
| Prime factorization | 1831 | 2 × 2 × 2 × 2 × 5 × 23 |
| Divisors count | 2 | 20 |
| Divisors | 1, 1831 | 1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 368, 460, 920, 1840 |
| Number of properties | 6 | 0 |
| Additive primes | 150th | |
| Emirps | 88th | |
| Harmonic primes | 101st | |
| Isolated primes | 171st | |
| Lucky primes | 67th | |
| Primes | 282nd | |
| Roman numberals | MDCCCXXXI | MDCCCXL |
| Base 2 | 111001001112 | 111001100002 |
| Base 3 | 21112113 | 21120113 |
| Base 4 | 1302134 | 1303004 |
| Base 5 | 243115 | 243305 |
| Base 6 | 122516 | 123046 |
| Base 7 | 52247 | 52367 |
| Base 8 | 34478 | 34608 |
| Base 9 | 24549 | 24649 |
| Base 10 | 183110 | 184010 |
| Base 11 | 141511 | 142311 |
| Base 12 | 108712 | 109412 |
| Base 13 | aab13 | ab713 |
| Base 14 | 94b14 | 95614 |
| Base 15 | 82115 | 82a15 |
| Base 16 | 72716 | 73016 |