Compare 1815 vs 1816
| Property | 1815 | 1816 |
|---|---|---|
| Type | composite number | composite number |
| Unique factors | 3 | 2 |
| Total factors | 4 | 4 |
| Prime factorization | 31 × 51 × 112 | 23 × 2271 |
| Prime factorization | 3 × 5 × 11 × 11 | 2 × 2 × 2 × 227 |
| Divisors count | 12 | 8 |
| Divisors | 1, 3, 5, 11, 15, 33, 55, 121, 165, 363, 605, 1815 | 1, 2, 4, 8, 227, 454, 908, 1816 |
| Number of properties | 0 | 0 |
| Roman numberals | MDCCCXV | MDCCCXVI |
| Base 2 | 111000101112 | 111000110002 |
| Base 3 | 21110203 | 21110213 |
| Base 4 | 1301134 | 1301204 |
| Base 5 | 242305 | 242315 |
| Base 6 | 122236 | 122246 |
| Base 7 | 52027 | 52037 |
| Base 8 | 34278 | 34308 |
| Base 9 | 24369 | 24379 |
| Base 10 | 181510 | 181610 |
| Base 11 | 140011 | 140111 |
| Base 12 | 107312 | 107412 |
| Base 13 | a9813 | a9913 |
| Base 14 | 93914 | 93a14 |
| Base 15 | 81015 | 81115 |
| Base 16 | 71716 | 71816 |