Compare 21859 vs 21869
| Property | 21859 | 21869 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 218591 | 191 × 11511 |
| Prime factorization | 21859 | 19 × 1151 |
| Divisors count | 2 | 4 |
| Divisors | 1, 21859 | 1, 19, 1151, 21869 |
| Number of properties | 5 | 1 |
| Cousin primes (1st member) | 373rd | |
| Harmonic primes | 903rd | |
| Isolated primes | 1709th | |
| Long primes | 928th | |
| Primes | 2452nd | |
| Semiprimes | 5521st | |
| Roman numberals | ||
| Base 2 | 1010101011000112 | 1010101011011012 |
| Base 3 | 10022221213 | 10022222223 |
| Base 4 | 111112034 | 111112314 |
| Base 5 | 11444145 | 11444345 |
| Base 6 | 2451116 | 2451256 |
| Base 7 | 1205057 | 1205217 |
| Base 8 | 525438 | 525558 |
| Base 9 | 328779 | 328889 |
| Base 10 | 2185910 | 2186910 |
| Base 11 | 1547211 | 1548111 |
| Base 12 | 1079712 | 107a512 |
| Base 13 | 9c4613 | 9c5313 |
| Base 14 | 7d7514 | 7d8114 |
| Base 15 | 672415 | 672e15 |
| Base 16 | 556316 | 556d16 |