Compare 21855 vs 21859
| Property | 21855 | 21859 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 4 | 1 |
| Total factors | 4 | 1 |
| Prime factorization | 31 × 51 × 311 × 471 | 218591 |
| Prime factorization | 3 × 5 × 31 × 47 | 21859 |
| Divisors count | 16 | 2 |
| Divisors | 1, 3, 5, 15, 31, 47, 93, 141, 155, 235, 465, 705, 1457, 4371, 7285, 21855 | 1, 21859 |
| Number of properties | 0 | 5 |
| Cousin primes (1st member) | 373rd | |
| Harmonic primes | 903rd | |
| Isolated primes | 1709th | |
| Long primes | 928th | |
| Primes | 2452nd | |
| Roman numberals | ||
| Base 2 | 1010101010111112 | 1010101011000112 |
| Base 3 | 10022221103 | 10022221213 |
| Base 4 | 111111334 | 111112034 |
| Base 5 | 11444105 | 11444145 |
| Base 6 | 2451036 | 2451116 |
| Base 7 | 1205017 | 1205057 |
| Base 8 | 525378 | 525438 |
| Base 9 | 328739 | 328779 |
| Base 10 | 2185510 | 2185910 |
| Base 11 | 1546911 | 1547211 |
| Base 12 | 1079312 | 1079712 |
| Base 13 | 9c4213 | 9c4613 |
| Base 14 | 7d7114 | 7d7514 |
| Base 15 | 672015 | 672415 |
| Base 16 | 555f16 | 556316 |