Compare 21859 vs 21870
| Property | 21859 | 21870 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 9 |
| Prime factorization | 218591 | 21 × 37 × 51 |
| Prime factorization | 21859 | 2 × 3 × 3 × 3 × 3 × 3 × 3 × 3 × 5 |
| Divisors count | 2 | 32 |
| Divisors | 1, 21859 | 1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 81, 90, 135, 162, 243, 270, 405, 486, 729, 810, 1215, 1458, 2187, 2430, 3645, 4374, 7290, 10935, 21870 |
| Number of properties | 5 | 0 |
| Cousin primes (1st member) | 373rd | |
| Harmonic primes | 903rd | |
| Isolated primes | 1709th | |
| Long primes | 928th | |
| Primes | 2452nd | |
| Roman numberals | ||
| Base 2 | 1010101011000112 | 1010101011011102 |
| Base 3 | 10022221213 | 10100000003 |
| Base 4 | 111112034 | 111112324 |
| Base 5 | 11444145 | 11444405 |
| Base 6 | 2451116 | 2451306 |
| Base 7 | 1205057 | 1205227 |
| Base 8 | 525438 | 525568 |
| Base 9 | 328779 | 330009 |
| Base 10 | 2185910 | 2187010 |
| Base 11 | 1547211 | 1548211 |
| Base 12 | 1079712 | 107a612 |
| Base 13 | 9c4613 | 9c5413 |
| Base 14 | 7d7514 | 7d8214 |
| Base 15 | 672415 | 673015 |
| Base 16 | 556316 | 556e16 |