Compare 221728 vs 221729
| Property | 221728 | 221729 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 8 | 1 |
| Prime factorization | 25 × 132 × 411 | 2217291 |
| Prime factorization | 2 × 2 × 2 × 2 × 2 × 13 × 13 × 41 | 221729 |
| Divisors count | 36 | 2 |
| Divisors | 1, 2, 4, 8, 13, 16, 26, 32, 41, 52, 82, 104, 164, 169, 208, 328, 338, 416, 533, 656, 676, 1066, 1312, 1352, 2132, 2704, 4264, 5408, 6929, 8528, 13858, 17056, 27716, 55432, 110864, 221728 | 1, 221729 |
| Number of properties | 0 | 8 |
| Additive primes | 7997th | |
| Chen primes | 8233rd | |
| Harmonic primes | 7416th | |
| Isolated primes | 15068th | |
| Primes | 19757th | |
| Pythagorean primes | 9858th | |
| Sexy primes (2nd member) | 4675th | |
| Sexy prime triplets (3rd member) | 933rd | |
| Roman numberals | ||
| Base 2 | 1101100010001000002 | 1101100010001000012 |
| Base 3 | 1020210110113 | 1020210110123 |
| Base 4 | 3120202004 | 3120202014 |
| Base 5 | 240434035 | 240434045 |
| Base 6 | 44303046 | 44303056 |
| Base 7 | 16123037 | 16123047 |
| Base 8 | 6610408 | 6610418 |
| Base 9 | 3671349 | 3671359 |
| Base 10 | 22172810 | 22172910 |
| Base 11 | 14165111 | 14165211 |
| Base 12 | a839412 | a839512 |
| Base 13 | 79c0013 | 79c0113 |
| Base 14 | 5ab3a14 | 5ab3b14 |
| Base 15 | 45a6d15 | 45a6e15 |
| Base 16 | 3622016 | 3622116 |