Compare 158 vs 166
| Property | 158 | 166 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 21 × 791 | 21 × 831 |
| Prime factorization | 2 × 79 | 2 × 83 |
| Divisors count | 4 | 4 |
| Divisors | 1, 2, 79, 158 | 1, 2, 83, 166 |
| Number of properties | 1 | 1 |
| Semiprimes | 52nd | 55th |
| Roman numberals | CLVIII | CLXVI |
| Base 2 | 100111102 | 101001102 |
| Base 3 | 122123 | 200113 |
| Base 4 | 21324 | 22124 |
| Base 5 | 11135 | 11315 |
| Base 6 | 4226 | 4346 |
| Base 7 | 3147 | 3257 |
| Base 8 | 2368 | 2468 |
| Base 9 | 1859 | 2049 |
| Base 10 | 15810 | 16610 |
| Base 11 | 13411 | 14111 |
| Base 12 | 11212 | 11a12 |
| Base 13 | c213 | ca13 |
| Base 14 | b414 | bc14 |
| Base 15 | a815 | b115 |
| Base 16 | 9e16 | a616 |