Compare 247 vs 255
| Property | 247 | 255 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 3 |
| Total factors | 2 | 3 |
| Prime factorization | 131 × 191 | 31 × 51 × 171 |
| Prime factorization | 13 × 19 | 3 × 5 × 17 |
| Divisors count | 4 | 8 |
| Divisors | 1, 13, 19, 247 | 1, 3, 5, 15, 17, 51, 85, 255 |
| Number of properties | 1 | 0 |
| Semiprimes | 79th | |
| Roman numberals | CCXLVII | CCLV |
| Base 2 | 111101112 | 111111112 |
| Base 3 | 1000113 | 1001103 |
| Base 4 | 33134 | 33334 |
| Base 5 | 14425 | 20105 |
| Base 6 | 10516 | 11036 |
| Base 7 | 5027 | 5137 |
| Base 8 | 3678 | 3778 |
| Base 9 | 3049 | 3139 |
| Base 10 | 24710 | 25510 |
| Base 11 | 20511 | 21211 |
| Base 12 | 18712 | 19312 |
| Base 13 | 16013 | 16813 |
| Base 14 | 13914 | 14314 |
| Base 15 | 11715 | 12015 |
| Base 16 | f716 | ff16 |