Compare 1813 vs 1823
| Property | 1813 | 1823 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 2 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 72 × 371 | 18231 |
| Prime factorization | 7 × 7 × 37 | 1823 |
| Divisors count | 6 | 2 |
| Divisors | 1, 7, 37, 49, 259, 1813 | 1, 1823 |
| Number of properties | 0 | 6 |
| Isolated primes | 170th | |
| Left-truncatable primes | 61st | |
| Long primes | 110th | |
| Primes | 281st | |
| Safe primes | 36th | |
| Super primes | 60th | |
| Roman numberals | MDCCCXIII | MDCCCXXIII |
| Base 2 | 111000101012 | 111000111112 |
| Base 3 | 21110113 | 21111123 |
| Base 4 | 1301114 | 1301334 |
| Base 5 | 242235 | 242435 |
| Base 6 | 122216 | 122356 |
| Base 7 | 52007 | 52137 |
| Base 8 | 34258 | 34378 |
| Base 9 | 24349 | 24459 |
| Base 10 | 181310 | 182310 |
| Base 11 | 13a911 | 140811 |
| Base 12 | 107112 | 107b12 |
| Base 13 | a9613 | aa313 |
| Base 14 | 93714 | 94314 |
| Base 15 | 80d15 | 81815 |
| Base 16 | 71516 | 71f16 |