Compare 405 vs 407
| Property | 405 | 407 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 5 | 2 |
| Prime factorization | 34 × 51 | 111 × 371 |
| Prime factorization | 3 × 3 × 3 × 3 × 5 | 11 × 37 |
| Divisors count | 10 | 4 |
| Divisors | 1, 3, 5, 9, 15, 27, 45, 81, 135, 405 | 1, 11, 37, 407 |
| Number of properties | 0 | 1 |
| Semiprimes | 128th | |
| Roman numberals | CDV | CDVII |
| Base 2 | 1100101012 | 1100101112 |
| Base 3 | 1200003 | 1200023 |
| Base 4 | 121114 | 121134 |
| Base 5 | 31105 | 31125 |
| Base 6 | 15136 | 15156 |
| Base 7 | 11167 | 11217 |
| Base 8 | 6258 | 6278 |
| Base 9 | 5009 | 5029 |
| Base 10 | 40510 | 40710 |
| Base 11 | 33911 | 34011 |
| Base 12 | 29912 | 29b12 |
| Base 13 | 25213 | 25413 |
| Base 14 | 20d14 | 21114 |
| Base 15 | 1c015 | 1c215 |
| Base 16 | 19516 | 19716 |