Compare 20731 vs 21139
| Property | 20731 | 21139 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 207311 | 211391 |
| Prime factorization | 20731 | 21139 |
| Divisors count | 2 | 2 |
| Divisors | 1, 20731 | 1, 21139 |
| Number of properties | 6 | 5 |
| Additive primes | 1085th | |
| Chen primes | 1148th | |
| Cousin primes (1st member) | 360th | |
| Good primes | 266th | |
| Harmonic primes | 853rd | |
| Isolated primes | 1631st | 1656th |
| Lucky primes | 379th | 385th |
| Primes | 2334th | 2375th |
| Roman numberals | ||
| Base 2 | 1010000111110112 | 1010010100100112 |
| Base 3 | 10011022113 | 10012222213 |
| Base 4 | 110033234 | 110221034 |
| Base 5 | 11304115 | 11340245 |
| Base 6 | 2355516 | 2415116 |
| Base 7 | 1143047 | 1154267 |
| Base 8 | 503738 | 512238 |
| Base 9 | 313849 | 318879 |
| Base 10 | 2073110 | 2113910 |
| Base 11 | 1463711 | 1497811 |
| Base 12 | bbb712 | 1029712 |
| Base 13 | 958913 | 981113 |
| Base 14 | 77ab14 | 79bd14 |
| Base 15 | 622115 | 63e415 |
| Base 16 | 50fb16 | 529316 |