Compare 399 vs 407
| Property | 399 | 407 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 3 | 2 |
| Total factors | 3 | 2 |
| Prime factorization | 31 × 71 × 191 | 111 × 371 |
| Prime factorization | 3 × 7 × 19 | 11 × 37 |
| Divisors count | 8 | 4 |
| Divisors | 1, 3, 7, 19, 21, 57, 133, 399 | 1, 11, 37, 407 |
| Number of properties | 0 | 1 |
| Semiprimes | 128th | |
| Roman numberals | CCCXCIX | CDVII |
| Base 2 | 1100011112 | 1100101112 |
| Base 3 | 1122103 | 1200023 |
| Base 4 | 120334 | 121134 |
| Base 5 | 30445 | 31125 |
| Base 6 | 15036 | 15156 |
| Base 7 | 11107 | 11217 |
| Base 8 | 6178 | 6278 |
| Base 9 | 4839 | 5029 |
| Base 10 | 39910 | 40710 |
| Base 11 | 33311 | 34011 |
| Base 12 | 29312 | 29b12 |
| Base 13 | 24913 | 25413 |
| Base 14 | 20714 | 21114 |
| Base 15 | 1b915 | 1c215 |
| Base 16 | 18f16 | 19716 |