Compare 1822 vs 1831
| Property | 1822 | 1831 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 21 × 9111 | 18311 |
| Prime factorization | 2 × 911 | 1831 |
| Divisors count | 4 | 2 |
| Divisors | 1, 2, 911, 1822 | 1, 1831 |
| Number of properties | 1 | 6 |
| Additive primes | 150th | |
| Emirps | 88th | |
| Harmonic primes | 101st | |
| Isolated primes | 171st | |
| Lucky primes | 67th | |
| Primes | 282nd | |
| Semiprimes | 525th | |
| Roman numberals | MDCCCXXII | MDCCCXXXI |
| Base 2 | 111000111102 | 111001001112 |
| Base 3 | 21111113 | 21112113 |
| Base 4 | 1301324 | 1302134 |
| Base 5 | 242425 | 243115 |
| Base 6 | 122346 | 122516 |
| Base 7 | 52127 | 52247 |
| Base 8 | 34368 | 34478 |
| Base 9 | 24449 | 24549 |
| Base 10 | 182210 | 183110 |
| Base 11 | 140711 | 141511 |
| Base 12 | 107a12 | 108712 |
| Base 13 | aa213 | aab13 |
| Base 14 | 94214 | 94b14 |
| Base 15 | 81715 | 82115 |
| Base 16 | 71e16 | 72716 |