Compare 289 vs 309
| Property | 289 | 309 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 172 | 31 × 1031 |
| Prime factorization | 17 × 17 | 3 × 103 |
| Divisors count | 3 | 4 |
| Divisors | 1, 17, 289 | 1, 3, 103, 309 |
| Number of properties | 1 | 1 |
| Semiprimes | 90th | 99th |
| Roman numberals | CCLXXXIX | CCCIX |
| Base 2 | 1001000012 | 1001101012 |
| Base 3 | 1012013 | 1021103 |
| Base 4 | 102014 | 103114 |
| Base 5 | 21245 | 22145 |
| Base 6 | 12016 | 12336 |
| Base 7 | 5627 | 6217 |
| Base 8 | 4418 | 4658 |
| Base 9 | 3519 | 3739 |
| Base 10 | 28910 | 30910 |
| Base 11 | 24311 | 26111 |
| Base 12 | 20112 | 21912 |
| Base 13 | 19313 | 1aa13 |
| Base 14 | 16914 | 18114 |
| Base 15 | 14415 | 15915 |
| Base 16 | 12116 | 13516 |