Compare 20887 vs 21139
| Property | 20887 | 21139 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 208871 | 211391 |
| Prime factorization | 20887 | 21139 |
| Divisors count | 2 | 2 |
| Divisors | 1, 20887 | 1, 21139 |
| Number of properties | 3 | 5 |
| Cousin primes (1st member) | 360th | |
| Good primes | 266th | |
| Isolated primes | 1640th | 1656th |
| Lucky primes | 381st | 385th |
| Primes | 2349th | 2375th |
| Roman numberals | ||
| Base 2 | 1010001100101112 | 1010010100100112 |
| Base 3 | 10011221213 | 10012222213 |
| Base 4 | 110121134 | 110221034 |
| Base 5 | 11320225 | 11340245 |
| Base 6 | 2404116 | 2415116 |
| Base 7 | 1146167 | 1154267 |
| Base 8 | 506278 | 512238 |
| Base 9 | 315779 | 318879 |
| Base 10 | 2088710 | 2113910 |
| Base 11 | 1476911 | 1497811 |
| Base 12 | 1010712 | 1029712 |
| Base 13 | 967913 | 981113 |
| Base 14 | 787d14 | 79bd14 |
| Base 15 | 62c715 | 63e415 |
| Base 16 | 519716 | 529316 |