Compare 28087 vs 28091
| Property | 28087 | 28091 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 280871 | 71 × 40131 |
| Prime factorization | 28087 | 7 × 4013 |
| Divisors count | 2 | 4 |
| Divisors | 1, 28087 | 1, 7, 4013, 28091 |
| Number of properties | 5 | 1 |
| Harmonic primes | 1143rd | |
| Isolated primes | 2173rd | |
| Lucky primes | 478th | |
| Primes | 3064th | |
| Semiprimes | 7002nd | |
| Sexy primes (2nd member) | 905th | |
| Roman numberals | ||
| Base 2 | 1101101101101112 | 1101101101110112 |
| Base 3 | 11021120213 | 11021121023 |
| Base 4 | 123123134 | 123123234 |
| Base 5 | 13443225 | 13443315 |
| Base 6 | 3340116 | 3340156 |
| Base 7 | 1446137 | 1446207 |
| Base 8 | 666678 | 666738 |
| Base 9 | 424679 | 424729 |
| Base 10 | 2808710 | 2809110 |
| Base 11 | 1a11411 | 1a11811 |
| Base 12 | 1430712 | 1430b12 |
| Base 13 | ca2713 | ca2b13 |
| Base 14 | a34314 | a34714 |
| Base 15 | 84c715 | 84cb15 |
| Base 16 | 6db716 | 6dbb16 |