Compare 478 vs 487
| Property | 478 | 487 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 21 × 2391 | 4871 |
| Prime factorization | 2 × 239 | 487 |
| Divisors count | 4 | 2 |
| Divisors | 1, 2, 239, 478 | 1, 487 |
| Number of properties | 1 | 10 |
| Additive primes | 54th | |
| Chen primes | 65th | |
| Cousin primes (1st member) | 26th | |
| Happy primes | 23rd | |
| Harmonic primes | 37th | |
| Isolated primes | 46th | |
| Long primes | 33rd | |
| Lucky primes | 26th | |
| Pierpont primes | 16th | |
| Primes | 93rd | |
| Semiprimes | 147th | |
| Roman numberals | CDLXXVIII | CDLXXXVII |
| Base 2 | 1110111102 | 1111001112 |
| Base 3 | 1222013 | 2000013 |
| Base 4 | 131324 | 132134 |
| Base 5 | 34035 | 34225 |
| Base 6 | 21146 | 21316 |
| Base 7 | 12527 | 12647 |
| Base 8 | 7368 | 7478 |
| Base 9 | 5819 | 6019 |
| Base 10 | 47810 | 48710 |
| Base 11 | 3a511 | 40311 |
| Base 12 | 33a12 | 34712 |
| Base 13 | 2aa13 | 2b613 |
| Base 14 | 26214 | 26b14 |
| Base 15 | 21d15 | 22715 |
| Base 16 | 1de16 | 1e716 |