Compare 19889 vs 21139
| Property | 19889 | 21139 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 198891 | 211391 |
| Prime factorization | 19889 | 21139 |
| Divisors count | 2 | 2 |
| Divisors | 1, 19889 | 1, 21139 |
| Number of properties | 8 | 5 |
| Chen primes | 1106th | |
| Cousin primes (1st member) | 360th | |
| Good primes | 255th | 266th |
| Happy primes | 374th | |
| Harmonic primes | 814th | |
| Isolated primes | 1656th | |
| Lucky primes | 385th | |
| Primes | 2249th | 2375th |
| Pythagorean primes | 1118th | |
| Sophie germain primes | 323rd | |
| Twin primes (1st member) | 340th | |
| Roman numberals | ||
| Base 2 | 1001101101100012 | 1010010100100112 |
| Base 3 | 10000211223 | 10012222213 |
| Base 4 | 103123014 | 110221034 |
| Base 5 | 11140245 | 11340245 |
| Base 6 | 2320256 | 2415116 |
| Base 7 | 1116627 | 1154267 |
| Base 8 | 466618 | 512238 |
| Base 9 | 302489 | 318879 |
| Base 10 | 1988910 | 2113910 |
| Base 11 | 13a4111 | 1497811 |
| Base 12 | b61512 | 1029712 |
| Base 13 | 908c13 | 981113 |
| Base 14 | 736914 | 79bd14 |
| Base 15 | 5d5e15 | 63e415 |
| Base 16 | 4db116 | 529316 |