Compare 247 vs 289
| Property | 247 | 289 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 2 |
| Prime factorization | 131 × 191 | 172 |
| Prime factorization | 13 × 19 | 17 × 17 |
| Divisors count | 4 | 3 |
| Divisors | 1, 13, 19, 247 | 1, 17, 289 |
| Number of properties | 1 | 1 |
| Semiprimes | 79th | 90th |
| Roman numberals | CCXLVII | CCLXXXIX |
| Base 2 | 111101112 | 1001000012 |
| Base 3 | 1000113 | 1012013 |
| Base 4 | 33134 | 102014 |
| Base 5 | 14425 | 21245 |
| Base 6 | 10516 | 12016 |
| Base 7 | 5027 | 5627 |
| Base 8 | 3678 | 4418 |
| Base 9 | 3049 | 3519 |
| Base 10 | 24710 | 28910 |
| Base 11 | 20511 | 24311 |
| Base 12 | 18712 | 20112 |
| Base 13 | 16013 | 19313 |
| Base 14 | 13914 | 16914 |
| Base 15 | 11715 | 14415 |
| Base 16 | f716 | 12116 |