Compare 221399 vs 221509
| Property | 221399 | 221509 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 2213991 | 2215091 |
| Prime factorization | 221399 | 221509 |
| Divisors count | 2 | 2 |
| Divisors | 1, 221399 | 1, 221509 |
| Number of properties | 4 | 5 |
| Additive primes | 7988th | |
| Chen primes | 8221st | |
| Isolated primes | 15056th | |
| Primes | 19726th | 19737th |
| Pythagorean primes | 9848th | |
| Sexy primes (2nd member) | 4666th | |
| Twin primes (1st member) | 2340th | |
| Ulam primes | 1409th | |
| Roman numberals | ||
| Base 2 | 1101100000110101112 | 1101100001010001012 |
| Base 3 | 1020202002223 | 1020202120013 |
| Base 4 | 3120031134 | 3120110114 |
| Base 5 | 240410445 | 240420145 |
| Base 6 | 44245556 | 44253016 |
| Base 7 | 16113237 | 16115417 |
| Base 8 | 6603278 | 6605058 |
| Base 9 | 3666289 | 3667619 |
| Base 10 | 22139910 | 22150910 |
| Base 11 | 14138211 | 14147211 |
| Base 12 | a815b12 | a823112 |
| Base 13 | 79a0913 | 79a9213 |
| Base 14 | 5a98314 | 5aa2114 |
| Base 15 | 458ee15 | 4597415 |
| Base 16 | 360d716 | 3614516 |