Compare 21803 vs 21809
| Property | 21803 | 21809 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 218031 | 1131 × 1931 |
| Prime factorization | 21803 | 113 × 193 |
| Divisors count | 2 | 4 |
| Divisors | 1, 21803 | 1, 113, 193, 21809 |
| Number of properties | 5 | 1 |
| Cousin primes (2nd member) | 371st | |
| Harmonic primes | 900th | |
| Isolated primes | 1705th | |
| Primes | 2446th | |
| Semiprimes | 5510th | |
| Sophie germain primes | 353rd | |
| Roman numberals | ||
| Base 2 | 1010101001010112 | 1010101001100012 |
| Base 3 | 10022201123 | 10022202023 |
| Base 4 | 111102234 | 111103014 |
| Base 5 | 11442035 | 11442145 |
| Base 6 | 2445356 | 2445456 |
| Base 7 | 1203657 | 1204047 |
| Base 8 | 524538 | 524618 |
| Base 9 | 328159 | 328229 |
| Base 10 | 2180310 | 2180910 |
| Base 11 | 1542111 | 1542711 |
| Base 12 | 1074b12 | 1075512 |
| Base 13 | 9c0213 | 9c0813 |
| Base 14 | 7d3514 | 7d3b14 |
| Base 15 | 66d815 | 66de15 |
| Base 16 | 552b16 | 553116 |