Compare 19891 vs 30803
| Property | 19891 | 30803 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 198911 | 308031 |
| Prime factorization | 19891 | 30803 |
| Divisors count | 2 | 2 |
| Divisors | 1, 19891 | 1, 30803 |
| Number of properties | 4 | 9 |
| Good primes | 331st | |
| Happy primes | 548th | |
| Harmonic primes | 815th | 1234th |
| Isolated primes | 2371st | |
| Palindromic primes | 45th | 51st |
| Primes | 2250th | 3320th |
| Safe primes | 271st | |
| Sexy primes (1st member) | 972nd | |
| Twin primes (2nd member) | 340th | |
| Ulam primes | 253rd | |
| Roman numberals | ||
| Base 2 | 1001101101100112 | 1111000010100112 |
| Base 3 | 10000212013 | 11200202123 |
| Base 4 | 103123034 | 132011034 |
| Base 5 | 11140315 | 14412035 |
| Base 6 | 2320316 | 3543356 |
| Base 7 | 1116647 | 1555437 |
| Base 8 | 466638 | 741238 |
| Base 9 | 302519 | 462259 |
| Base 10 | 1989110 | 3080310 |
| Base 11 | 13a4311 | 2116311 |
| Base 12 | b61712 | 159ab12 |
| Base 13 | 909113 | 1103613 |
| Base 14 | 736b14 | b32314 |
| Base 15 | 5d6115 | 91d815 |
| Base 16 | 4db316 | 785316 |