Compare 281221 vs 281227
| Property | 281221 | 281227 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 231 × 122271 | 2812271 |
| Prime factorization | 23 × 12227 | 281227 |
| Divisors count | 4 | 2 |
| Divisors | 1, 23, 12227, 281221 | 1, 281227 |
| Number of properties | 1 | 4 |
| Harmonic primes | 9153rd | |
| Isolated primes | 18849th | |
| Primes | 24534th | |
| Semiprimes | 62590th | |
| Sexy primes (1st member) | 5685th | |
| Roman numberals | ||
| Base 2 | 10001001010100001012 | 10001001010100010112 |
| Base 3 | 1120212021213 | 1120212022113 |
| Base 4 | 10102220114 | 10102220234 |
| Base 5 | 324443415 | 324444025 |
| Base 6 | 100055416 | 100055516 |
| Base 7 | 22506137 | 22506227 |
| Base 8 | 10452058 | 10452138 |
| Base 9 | 4676779 | 4676849 |
| Base 10 | 28122110 | 28122710 |
| Base 11 | 18231611 | 18232111 |
| Base 12 | 1168b112 | 1168b712 |
| Base 13 | 9b00513 | 9b00b13 |
| Base 14 | 746b314 | 746b914 |
| Base 15 | 584d115 | 584d715 |
| Base 16 | 44a8516 | 44a8b16 |