Compare 28387 vs 28389
| Property | 28387 | 28389 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 283871 | 31 × 94631 |
| Prime factorization | 28387 | 3 × 9463 |
| Divisors count | 2 | 4 |
| Divisors | 1, 28387 | 1, 3, 9463, 28389 |
| Number of properties | 6 | 1 |
| Chen primes | 1503rd | |
| Good primes | 314th | |
| Happy primes | 497th | |
| Isolated primes | 2185th | |
| Primes | 3088th | |
| Semiprimes | 7081st | |
| Sexy primes (1st member) | 908th | |
| Roman numberals | ||
| Base 2 | 1101110111000112 | 1101110111001012 |
| Base 3 | 11022211013 | 11022211103 |
| Base 4 | 123232034 | 123232114 |
| Base 5 | 14020225 | 14020245 |
| Base 6 | 3352316 | 3352336 |
| Base 7 | 1455227 | 1455247 |
| Base 8 | 673438 | 673458 |
| Base 9 | 428419 | 428439 |
| Base 10 | 2838710 | 2838910 |
| Base 11 | 1a36711 | 1a36911 |
| Base 12 | 1451712 | 1451912 |
| Base 13 | cbc813 | cbca13 |
| Base 14 | a4b914 | a4bb14 |
| Base 15 | 862715 | 862915 |
| Base 16 | 6ee316 | 6ee516 |