Compare 253 vs 278
| Property | 253 | 278 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 111 × 231 | 21 × 1391 |
| Prime factorization | 11 × 23 | 2 × 139 |
| Divisors count | 4 | 4 |
| Divisors | 1, 11, 23, 253 | 1, 2, 139, 278 |
| Number of properties | 1 | 1 |
| Semiprimes | 81st | 88th |
| Roman numberals | CCLIII | CCLXXVIII |
| Base 2 | 111111012 | 1000101102 |
| Base 3 | 1001013 | 1010223 |
| Base 4 | 33314 | 101124 |
| Base 5 | 20035 | 21035 |
| Base 6 | 11016 | 11426 |
| Base 7 | 5117 | 5457 |
| Base 8 | 3758 | 4268 |
| Base 9 | 3119 | 3389 |
| Base 10 | 25310 | 27810 |
| Base 11 | 21011 | 23311 |
| Base 12 | 19112 | 1b212 |
| Base 13 | 16613 | 18513 |
| Base 14 | 14114 | 15c14 |
| Base 15 | 11d15 | 13815 |
| Base 16 | fd16 | 11616 |