Compare 1813 vs 1815
| Property | 1813 | 1815 |
|---|---|---|
| Type | composite number | composite number |
| Unique factors | 2 | 3 |
| Total factors | 3 | 4 |
| Prime factorization | 72 × 371 | 31 × 51 × 112 |
| Prime factorization | 7 × 7 × 37 | 3 × 5 × 11 × 11 |
| Divisors count | 6 | 12 |
| Divisors | 1, 7, 37, 49, 259, 1813 | 1, 3, 5, 11, 15, 33, 55, 121, 165, 363, 605, 1815 |
| Number of properties | 0 | 0 |
| Roman numberals | MDCCCXIII | MDCCCXV |
| Base 2 | 111000101012 | 111000101112 |
| Base 3 | 21110113 | 21110203 |
| Base 4 | 1301114 | 1301134 |
| Base 5 | 242235 | 242305 |
| Base 6 | 122216 | 122236 |
| Base 7 | 52007 | 52027 |
| Base 8 | 34258 | 34278 |
| Base 9 | 24349 | 24369 |
| Base 10 | 181310 | 181510 |
| Base 11 | 13a911 | 140011 |
| Base 12 | 107112 | 107312 |
| Base 13 | a9613 | a9813 |
| Base 14 | 93714 | 93914 |
| Base 15 | 80d15 | 81015 |
| Base 16 | 71516 | 71716 |