Compare 381 vs 407
| Property | 381 | 407 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 31 × 1271 | 111 × 371 |
| Prime factorization | 3 × 127 | 11 × 37 |
| Divisors count | 4 | 4 |
| Divisors | 1, 3, 127, 381 | 1, 11, 37, 407 |
| Number of properties | 1 | 1 |
| Semiprimes | 119th | 128th |
| Roman numberals | CCCLXXXI | CDVII |
| Base 2 | 1011111012 | 1100101112 |
| Base 3 | 1120103 | 1200023 |
| Base 4 | 113314 | 121134 |
| Base 5 | 30115 | 31125 |
| Base 6 | 14336 | 15156 |
| Base 7 | 10537 | 11217 |
| Base 8 | 5758 | 6278 |
| Base 9 | 4639 | 5029 |
| Base 10 | 38110 | 40710 |
| Base 11 | 31711 | 34011 |
| Base 12 | 27912 | 29b12 |
| Base 13 | 23413 | 25413 |
| Base 14 | 1d314 | 21114 |
| Base 15 | 1a615 | 1c215 |
| Base 16 | 17d16 | 19716 |