Compare 20389 vs 20398
| Property | 20389 | 20398 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 4 |
| Total factors | 1 | 4 |
| Prime factorization | 203891 | 21 × 71 × 311 × 471 |
| Prime factorization | 20389 | 2 × 7 × 31 × 47 |
| Divisors count | 2 | 16 |
| Divisors | 1, 20389 | 1, 2, 7, 14, 31, 47, 62, 94, 217, 329, 434, 658, 1457, 2914, 10199, 20398 |
| Number of properties | 5 | 0 |
| Cousin primes (1st member) | 351st | |
| Isolated primes | 1612th | |
| Primes | 2303rd | |
| Pythagorean primes | 1148th | |
| Ulam primes | 168th | |
| Roman numberals | ||
| Base 2 | 1001111101001012 | 1001111101011102 |
| Base 3 | 10002220113 | 10002221113 |
| Base 4 | 103322114 | 103322324 |
| Base 5 | 11230245 | 11230435 |
| Base 6 | 2342216 | 2342346 |
| Base 7 | 1133057 | 1133207 |
| Base 8 | 476458 | 476568 |
| Base 9 | 308649 | 308749 |
| Base 10 | 2038910 | 2039810 |
| Base 11 | 1435611 | 1436411 |
| Base 12 | b97112 | b97a12 |
| Base 13 | 938513 | 939113 |
| Base 14 | 760514 | 761014 |
| Base 15 | 609415 | 609d15 |
| Base 16 | 4fa516 | 4fae16 |