Compare 21881 vs 21889
| Property | 21881 | 21889 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 3 |
| Prime factorization | 218811 | 71 × 531 × 591 |
| Prime factorization | 21881 | 7 × 53 × 59 |
| Divisors count | 2 | 8 |
| Divisors | 1, 21881 | 1, 7, 53, 59, 371, 413, 3127, 21889 |
| Number of properties | 4 | 0 |
| Chen primes | 1204th | |
| Isolated primes | 1712th | |
| Primes | 2455th | |
| Pythagorean primes | 1217th | |
| Roman numberals | ||
| Base 2 | 1010101011110012 | 1010101100000012 |
| Base 3 | 10100001023 | 10100002013 |
| Base 4 | 111113214 | 111120014 |
| Base 5 | 12000115 | 12000245 |
| Base 6 | 2451456 | 2452016 |
| Base 7 | 1205367 | 1205507 |
| Base 8 | 525718 | 526018 |
| Base 9 | 330129 | 330219 |
| Base 10 | 2188110 | 2188910 |
| Base 11 | 1549211 | 1549a11 |
| Base 12 | 107b512 | 1080112 |
| Base 13 | 9c6213 | 9c6a13 |
| Base 14 | 7d8d14 | 7d9714 |
| Base 15 | 673b15 | 674415 |
| Base 16 | 557916 | 558116 |