Compare 21858 vs 21863
| Property | 21858 | 21863 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 21 × 31 × 36431 | 218631 |
| Prime factorization | 2 × 3 × 3643 | 21863 |
| Divisors count | 8 | 2 |
| Divisors | 1, 2, 3, 6, 3643, 7286, 10929, 21858 | 1, 21863 |
| Number of properties | 0 | 7 |
| Chen primes | 1203rd | |
| Cousin primes (2nd member) | 373rd | |
| Harmonic primes | 904th | |
| Isolated primes | 1710th | |
| Long primes | 929th | |
| Primes | 2453rd | |
| Ulam primes | 183rd | |
| Roman numberals | ||
| Base 2 | 1010101011000102 | 1010101011001112 |
| Base 3 | 10022221203 | 10022222023 |
| Base 4 | 111112024 | 111112134 |
| Base 5 | 11444135 | 11444235 |
| Base 6 | 2451106 | 2451156 |
| Base 7 | 1205047 | 1205127 |
| Base 8 | 525428 | 525478 |
| Base 9 | 328769 | 328829 |
| Base 10 | 2185810 | 2186310 |
| Base 11 | 1547111 | 1547611 |
| Base 12 | 1079612 | 1079b12 |
| Base 13 | 9c4513 | 9c4a13 |
| Base 14 | 7d7414 | 7d7914 |
| Base 15 | 672315 | 672815 |
| Base 16 | 556216 | 556716 |