Compare 215 vs 253
| Property | 215 | 253 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 51 × 431 | 111 × 231 |
| Prime factorization | 5 × 43 | 11 × 23 |
| Divisors count | 4 | 4 |
| Divisors | 1, 5, 43, 215 | 1, 11, 23, 253 |
| Number of properties | 1 | 1 |
| Semiprimes | 71st | 81st |
| Roman numberals | CCXV | CCLIII |
| Base 2 | 110101112 | 111111012 |
| Base 3 | 212223 | 1001013 |
| Base 4 | 31134 | 33314 |
| Base 5 | 13305 | 20035 |
| Base 6 | 5556 | 11016 |
| Base 7 | 4257 | 5117 |
| Base 8 | 3278 | 3758 |
| Base 9 | 2589 | 3119 |
| Base 10 | 21510 | 25310 |
| Base 11 | 18611 | 21011 |
| Base 12 | 15b12 | 19112 |
| Base 13 | 13713 | 16613 |
| Base 14 | 11514 | 14114 |
| Base 15 | e515 | 11d15 |
| Base 16 | d716 | fd16 |