Compare 305 vs 309
| Property | 305 | 309 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 51 × 611 | 31 × 1031 |
| Prime factorization | 5 × 61 | 3 × 103 |
| Divisors count | 4 | 4 |
| Divisors | 1, 5, 61, 305 | 1, 3, 103, 309 |
| Number of properties | 1 | 1 |
| Semiprimes | 98th | 99th |
| Roman numberals | CCCV | CCCIX |
| Base 2 | 1001100012 | 1001101012 |
| Base 3 | 1020223 | 1021103 |
| Base 4 | 103014 | 103114 |
| Base 5 | 22105 | 22145 |
| Base 6 | 12256 | 12336 |
| Base 7 | 6147 | 6217 |
| Base 8 | 4618 | 4658 |
| Base 9 | 3689 | 3739 |
| Base 10 | 30510 | 30910 |
| Base 11 | 25811 | 26111 |
| Base 12 | 21512 | 21912 |
| Base 13 | 1a613 | 1aa13 |
| Base 14 | 17b14 | 18114 |
| Base 15 | 15515 | 15915 |
| Base 16 | 13116 | 13516 |