Compare 728 vs 739
| Property | 728 | 739 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 5 | 1 |
| Prime factorization | 23 × 71 × 131 | 7391 |
| Prime factorization | 2 × 2 × 2 × 7 × 13 | 739 |
| Divisors count | 16 | 2 |
| Divisors | 1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728 | 1, 739 |
| Number of properties | 0 | 13 |
| Additive primes | 69th | |
| Cousin primes (1st member) | 31st | |
| Emirps | 24th | |
| Good primes | 38th | |
| Happy primes | 30th | |
| Isolated primes | 72nd | |
| Lucky primes | 36th | |
| Primes | 131st | |
| Right-truncatable primes | 26th | |
| Sexy primes (2nd member) | 62nd | |
| Sexy prime triplets (3rd member) | 26th | |
| Super primes | 32nd | |
| Ulam primes | 15th | |
| Roman numberals | DCCXXVIII | DCCXXXIX |
| Base 2 | 10110110002 | 10111000112 |
| Base 3 | 2222223 | 10001013 |
| Base 4 | 231204 | 232034 |
| Base 5 | 104035 | 104245 |
| Base 6 | 32126 | 32316 |
| Base 7 | 20607 | 21047 |
| Base 8 | 13308 | 13438 |
| Base 9 | 8889 | 10119 |
| Base 10 | 72810 | 73910 |
| Base 11 | 60211 | 61211 |
| Base 12 | 50812 | 51712 |
| Base 13 | 44013 | 44b13 |
| Base 14 | 3a014 | 3ab14 |
| Base 15 | 33815 | 34415 |
| Base 16 | 2d816 | 2e316 |