Compare 20721 vs 20731
| Property | 20721 | 20731 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 31 × 69071 | 207311 |
| Prime factorization | 3 × 6907 | 20731 |
| Divisors count | 4 | 2 |
| Divisors | 1, 3, 6907, 20721 | 1, 20731 |
| Number of properties | 1 | 6 |
| Additive primes | 1085th | |
| Chen primes | 1148th | |
| Harmonic primes | 853rd | |
| Isolated primes | 1631st | |
| Lucky primes | 379th | |
| Primes | 2334th | |
| Semiprimes | 5261st | |
| Roman numberals | ||
| Base 2 | 1010000111100012 | 1010000111110112 |
| Base 3 | 10011021103 | 10011022113 |
| Base 4 | 110033014 | 110033234 |
| Base 5 | 11303415 | 11304115 |
| Base 6 | 2355336 | 2355516 |
| Base 7 | 1142617 | 1143047 |
| Base 8 | 503618 | 503738 |
| Base 9 | 313739 | 313849 |
| Base 10 | 2072110 | 2073110 |
| Base 11 | 1462811 | 1463711 |
| Base 12 | bba912 | bbb712 |
| Base 13 | 957c13 | 958913 |
| Base 14 | 77a114 | 77ab14 |
| Base 15 | 621615 | 622115 |
| Base 16 | 50f116 | 50fb16 |