Compare 243 vs 253
| Property | 243 | 253 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 5 | 2 |
| Prime factorization | 35 | 111 × 231 |
| Prime factorization | 3 × 3 × 3 × 3 × 3 | 11 × 23 |
| Divisors count | 6 | 4 |
| Divisors | 1, 3, 9, 27, 81, 243 | 1, 11, 23, 253 |
| Number of properties | 0 | 1 |
| Semiprimes | 81st | |
| Roman numberals | CCXLIII | CCLIII |
| Base 2 | 111100112 | 111111012 |
| Base 3 | 1000003 | 1001013 |
| Base 4 | 33034 | 33314 |
| Base 5 | 14335 | 20035 |
| Base 6 | 10436 | 11016 |
| Base 7 | 4657 | 5117 |
| Base 8 | 3638 | 3758 |
| Base 9 | 3009 | 3119 |
| Base 10 | 24310 | 25310 |
| Base 11 | 20111 | 21011 |
| Base 12 | 18312 | 19112 |
| Base 13 | 15913 | 16613 |
| Base 14 | 13514 | 14114 |
| Base 15 | 11315 | 11d15 |
| Base 16 | f316 | fd16 |