Compare 19681 vs 20389
| Property | 19681 | 20389 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 196811 | 203891 |
| Prime factorization | 19681 | 20389 |
| Divisors count | 2 | 2 |
| Divisors | 1, 19681 | 1, 20389 |
| Number of properties | 7 | 5 |
| Cousin primes (1st member) | 351st | |
| Emirps | 616th | |
| Harmonic primes | 805th | |
| Isolated primes | 1556th | 1612th |
| Primes | 2227th | 2303rd |
| Pythagorean primes | 1106th | 1148th |
| Sexy primes (1st member) | 687th | |
| Ulam primes | 163rd | 168th |
| Roman numberals | ||
| Base 2 | 1001100111000012 | 1001111101001012 |
| Base 3 | 2222222213 | 10002220113 |
| Base 4 | 103032014 | 103322114 |
| Base 5 | 11122115 | 11230245 |
| Base 6 | 2310416 | 2342216 |
| Base 7 | 1112447 | 1133057 |
| Base 8 | 463418 | 476458 |
| Base 9 | 288879 | 308649 |
| Base 10 | 1968110 | 2038910 |
| Base 11 | 1387211 | 1435611 |
| Base 12 | b48112 | b97112 |
| Base 13 | 8c5c13 | 938513 |
| Base 14 | 725b14 | 760514 |
| Base 15 | 5c7115 | 609415 |
| Base 16 | 4ce116 | 4fa516 |