Compare 20389 vs 20507
| Property | 20389 | 20507 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 203891 | 205071 |
| Prime factorization | 20389 | 20507 |
| Divisors count | 2 | 2 |
| Divisors | 1, 20389 | 1, 20507 |
| Number of properties | 5 | 4 |
| Chen primes | 1139th | |
| Cousin primes (1st member) | 351st | |
| Isolated primes | 1612th | |
| Primes | 2303rd | 2314th |
| Pythagorean primes | 1148th | |
| Safe primes | 194th | |
| Twin primes (1st member) | 349th | |
| Ulam primes | 168th | |
| Roman numberals | ||
| Base 2 | 1001111101001012 | 1010000000110112 |
| Base 3 | 10002220113 | 10010101123 |
| Base 4 | 103322114 | 110001234 |
| Base 5 | 11230245 | 11240125 |
| Base 6 | 2342216 | 2345356 |
| Base 7 | 1133057 | 1135347 |
| Base 8 | 476458 | 500338 |
| Base 9 | 308649 | 311159 |
| Base 10 | 2038910 | 2050710 |
| Base 11 | 1435611 | 1445311 |
| Base 12 | b97112 | ba4b12 |
| Base 13 | 938513 | 944613 |
| Base 14 | 760514 | 768b14 |
| Base 15 | 609415 | 612215 |
| Base 16 | 4fa516 | 501b16 |