Compare 213 vs 215
| Property | 213 | 215 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 31 × 711 | 51 × 431 |
| Prime factorization | 3 × 71 | 5 × 43 |
| Divisors count | 4 | 4 |
| Divisors | 1, 3, 71, 213 | 1, 5, 43, 215 |
| Number of properties | 1 | 1 |
| Semiprimes | 69th | 71st |
| Roman numberals | CCXIII | CCXV |
| Base 2 | 110101012 | 110101112 |
| Base 3 | 212203 | 212223 |
| Base 4 | 31114 | 31134 |
| Base 5 | 13235 | 13305 |
| Base 6 | 5536 | 5556 |
| Base 7 | 4237 | 4257 |
| Base 8 | 3258 | 3278 |
| Base 9 | 2569 | 2589 |
| Base 10 | 21310 | 21510 |
| Base 11 | 18411 | 18611 |
| Base 12 | 15912 | 15b12 |
| Base 13 | 13513 | 13713 |
| Base 14 | 11314 | 11514 |
| Base 15 | e315 | e515 |
| Base 16 | d516 | d716 |