Compare 810 vs 813
| Property | 810 | 813 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 3 | 2 |
| Total factors | 6 | 2 |
| Prime factorization | 21 × 34 × 51 | 31 × 2711 |
| Prime factorization | 2 × 3 × 3 × 3 × 3 × 5 | 3 × 271 |
| Divisors count | 20 | 4 |
| Divisors | 1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 81, 90, 135, 162, 270, 405, 810 | 1, 3, 271, 813 |
| Number of properties | 0 | 1 |
| Semiprimes | 246th | |
| Roman numberals | DCCCX | DCCCXIII |
| Base 2 | 11001010102 | 11001011012 |
| Base 3 | 10100003 | 10100103 |
| Base 4 | 302224 | 302314 |
| Base 5 | 112205 | 112235 |
| Base 6 | 34306 | 34336 |
| Base 7 | 22357 | 22417 |
| Base 8 | 14528 | 14558 |
| Base 9 | 11009 | 11039 |
| Base 10 | 81010 | 81310 |
| Base 11 | 67711 | 67a11 |
| Base 12 | 57612 | 57912 |
| Base 13 | 4a413 | 4a713 |
| Base 14 | 41c14 | 42114 |
| Base 15 | 39015 | 39315 |
| Base 16 | 32a16 | 32d16 |