Compare 398 vs 405
| Property | 398 | 405 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 2 |
| Total factors | 2 | 5 |
| Prime factorization | 21 × 1991 | 34 × 51 |
| Prime factorization | 2 × 199 | 3 × 3 × 3 × 3 × 5 |
| Divisors count | 4 | 10 |
| Divisors | 1, 2, 199, 398 | 1, 3, 5, 9, 15, 27, 45, 81, 135, 405 |
| Number of properties | 1 | 0 |
| Semiprimes | 126th | |
| Roman numberals | CCCXCVIII | CDV |
| Base 2 | 1100011102 | 1100101012 |
| Base 3 | 1122023 | 1200003 |
| Base 4 | 120324 | 121114 |
| Base 5 | 30435 | 31105 |
| Base 6 | 15026 | 15136 |
| Base 7 | 11067 | 11167 |
| Base 8 | 6168 | 6258 |
| Base 9 | 4829 | 5009 |
| Base 10 | 39810 | 40510 |
| Base 11 | 33211 | 33911 |
| Base 12 | 29212 | 29912 |
| Base 13 | 24813 | 25213 |
| Base 14 | 20614 | 20d14 |
| Base 15 | 1b815 | 1c015 |
| Base 16 | 18e16 | 19516 |