Compare 19881 vs 19889
| Property | 19881 | 19889 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 2 | 1 |
| Total factors | 4 | 1 |
| Prime factorization | 32 × 472 | 198891 |
| Prime factorization | 3 × 3 × 47 × 47 | 19889 |
| Divisors count | 9 | 2 |
| Divisors | 1, 3, 9, 47, 141, 423, 2209, 6627, 19881 | 1, 19889 |
| Number of properties | 0 | 8 |
| Chen primes | 1106th | |
| Good primes | 255th | |
| Happy primes | 374th | |
| Harmonic primes | 814th | |
| Primes | 2249th | |
| Pythagorean primes | 1118th | |
| Sophie germain primes | 323rd | |
| Twin primes (1st member) | 340th | |
| Roman numberals | ||
| Base 2 | 1001101101010012 | 1001101101100012 |
| Base 3 | 10000211003 | 10000211223 |
| Base 4 | 103122214 | 103123014 |
| Base 5 | 11140115 | 11140245 |
| Base 6 | 2320136 | 2320256 |
| Base 7 | 1116517 | 1116627 |
| Base 8 | 466518 | 466618 |
| Base 9 | 302409 | 302489 |
| Base 10 | 1988110 | 1988910 |
| Base 11 | 13a3411 | 13a4111 |
| Base 12 | b60912 | b61512 |
| Base 13 | 908413 | 908c13 |
| Base 14 | 736114 | 736914 |
| Base 15 | 5d5615 | 5d5e15 |
| Base 16 | 4da916 | 4db116 |