Compare 213 vs 247
| Property | 213 | 247 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 31 × 711 | 131 × 191 |
| Prime factorization | 3 × 71 | 13 × 19 |
| Divisors count | 4 | 4 |
| Divisors | 1, 3, 71, 213 | 1, 13, 19, 247 |
| Number of properties | 1 | 1 |
| Semiprimes | 69th | 79th |
| Roman numberals | CCXIII | CCXLVII |
| Base 2 | 110101012 | 111101112 |
| Base 3 | 212203 | 1000113 |
| Base 4 | 31114 | 33134 |
| Base 5 | 13235 | 14425 |
| Base 6 | 5536 | 10516 |
| Base 7 | 4237 | 5027 |
| Base 8 | 3258 | 3678 |
| Base 9 | 2569 | 3049 |
| Base 10 | 21310 | 24710 |
| Base 11 | 18411 | 20511 |
| Base 12 | 15912 | 18712 |
| Base 13 | 13513 | 16013 |
| Base 14 | 11314 | 13914 |
| Base 15 | e315 | 11715 |
| Base 16 | d516 | f716 |