Compare 221281 vs 221399
| Property | 221281 | 221399 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 2212811 | 2213991 |
| Prime factorization | 221281 | 221399 |
| Divisors count | 2 | 2 |
| Divisors | 1, 221281 | 1, 221399 |
| Number of properties | 3 | 4 |
| Chen primes | 8221st | |
| Isolated primes | 15043rd | |
| Primes | 19720th | 19726th |
| Pythagorean primes | 9838th | |
| Sexy primes (2nd member) | 4666th | |
| Twin primes (1st member) | 2340th | |
| Roman numberals | ||
| Base 2 | 1101100000011000012 | 1101100000110101112 |
| Base 3 | 1020201121213 | 1020202002223 |
| Base 4 | 3120012014 | 3120031134 |
| Base 5 | 240401115 | 240410445 |
| Base 6 | 44242416 | 44245556 |
| Base 7 | 16110647 | 16113237 |
| Base 8 | 6601418 | 6603278 |
| Base 9 | 3664779 | 3666289 |
| Base 10 | 22128110 | 22139910 |
| Base 11 | 14128511 | 14138211 |
| Base 12 | a808112 | a815b12 |
| Base 13 | 7994813 | 79a0913 |
| Base 14 | 5a8db14 | 5a98314 |
| Base 15 | 4587115 | 458ee15 |
| Base 16 | 3606116 | 360d716 |