Compare 439 vs 445
| Property | 439 | 445 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 4391 | 51 × 891 |
| Prime factorization | 439 | 5 × 89 |
| Divisors count | 2 | 4 |
| Divisors | 1, 439 | 1, 5, 89, 445 |
| Number of properties | 4 | 1 |
| Cousin primes (1st member) | 23rd | |
| Isolated primes | 40th | |
| Primes | 85th | |
| Semiprimes | 136th | |
| Sexy primes (2nd member) | 43rd | |
| Roman numberals | CDXXXIX | CDXLV |
| Base 2 | 1101101112 | 1101111012 |
| Base 3 | 1210213 | 1211113 |
| Base 4 | 123134 | 123314 |
| Base 5 | 32245 | 32405 |
| Base 6 | 20116 | 20216 |
| Base 7 | 11657 | 12047 |
| Base 8 | 6678 | 6758 |
| Base 9 | 5379 | 5449 |
| Base 10 | 43910 | 44510 |
| Base 11 | 36a11 | 37511 |
| Base 12 | 30712 | 31112 |
| Base 13 | 27a13 | 28313 |
| Base 14 | 23514 | 23b14 |
| Base 15 | 1e415 | 1ea15 |
| Base 16 | 1b716 | 1bd16 |