Compare 815 vs 819
| Property | 815 | 819 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 3 |
| Total factors | 2 | 4 |
| Prime factorization | 51 × 1631 | 32 × 71 × 131 |
| Prime factorization | 5 × 163 | 3 × 3 × 7 × 13 |
| Divisors count | 4 | 12 |
| Divisors | 1, 5, 163, 815 | 1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819 |
| Number of properties | 1 | 0 |
| Semiprimes | 247th | |
| Roman numberals | DCCCXV | DCCCXIX |
| Base 2 | 11001011112 | 11001100112 |
| Base 3 | 10100123 | 10101003 |
| Base 4 | 302334 | 303034 |
| Base 5 | 112305 | 112345 |
| Base 6 | 34356 | 34436 |
| Base 7 | 22437 | 22507 |
| Base 8 | 14578 | 14638 |
| Base 9 | 11059 | 11109 |
| Base 10 | 81510 | 81910 |
| Base 11 | 68111 | 68511 |
| Base 12 | 57b12 | 58312 |
| Base 13 | 4a913 | 4b013 |
| Base 14 | 42314 | 42714 |
| Base 15 | 39515 | 39915 |
| Base 16 | 32f16 | 33316 |