Compare 205 vs 215
| Property | 205 | 215 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 51 × 411 | 51 × 431 |
| Prime factorization | 5 × 41 | 5 × 43 |
| Divisors count | 4 | 4 |
| Divisors | 1, 5, 41, 205 | 1, 5, 43, 215 |
| Number of properties | 1 | 1 |
| Semiprimes | 66th | 71st |
| Roman numberals | CCV | CCXV |
| Base 2 | 110011012 | 110101112 |
| Base 3 | 211213 | 212223 |
| Base 4 | 30314 | 31134 |
| Base 5 | 13105 | 13305 |
| Base 6 | 5416 | 5556 |
| Base 7 | 4127 | 4257 |
| Base 8 | 3158 | 3278 |
| Base 9 | 2479 | 2589 |
| Base 10 | 20510 | 21510 |
| Base 11 | 17711 | 18611 |
| Base 12 | 15112 | 15b12 |
| Base 13 | 12a13 | 13713 |
| Base 14 | 10914 | 11514 |
| Base 15 | da15 | e515 |
| Base 16 | cd16 | d716 |