Compare 428 vs 439
| Property | 428 | 439 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 2 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 22 × 1071 | 4391 |
| Prime factorization | 2 × 2 × 107 | 439 |
| Divisors count | 6 | 2 |
| Divisors | 1, 2, 4, 107, 214, 428 | 1, 439 |
| Number of properties | 0 | 4 |
| Cousin primes (1st member) | 23rd | |
| Isolated primes | 40th | |
| Primes | 85th | |
| Sexy primes (2nd member) | 43rd | |
| Roman numberals | CDXXVIII | CDXXXIX |
| Base 2 | 1101011002 | 1101101112 |
| Base 3 | 1202123 | 1210213 |
| Base 4 | 122304 | 123134 |
| Base 5 | 32035 | 32245 |
| Base 6 | 15526 | 20116 |
| Base 7 | 11517 | 11657 |
| Base 8 | 6548 | 6678 |
| Base 9 | 5259 | 5379 |
| Base 10 | 42810 | 43910 |
| Base 11 | 35a11 | 36a11 |
| Base 12 | 2b812 | 30712 |
| Base 13 | 26c13 | 27a13 |
| Base 14 | 22814 | 23514 |
| Base 15 | 1d815 | 1e415 |
| Base 16 | 1ac16 | 1b716 |