Compare 21143 vs 21155
| Property | 21143 | 21155 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 211431 | 51 × 42311 |
| Prime factorization | 21143 | 5 × 4231 |
| Divisors count | 2 | 4 |
| Divisors | 1, 21143 | 1, 5, 4231, 21155 |
| Number of properties | 9 | 1 |
| Additive primes | 1103rd | |
| Chen primes | 1167th | |
| Cousin primes (2nd member) | 360th | |
| Happy primes | 393rd | |
| Harmonic primes | 873rd | |
| Isolated primes | 1657th | |
| Long primes | 903rd | |
| Primes | 2376th | |
| Semiprimes | 5363rd | |
| Sexy primes (1st member) | 719th | |
| Roman numberals | ||
| Base 2 | 1010010100101112 | 1010010101000112 |
| Base 3 | 10020000023 | 10020001123 |
| Base 4 | 110221134 | 110222034 |
| Base 5 | 11340335 | 11341105 |
| Base 6 | 2415156 | 2415356 |
| Base 7 | 1154337 | 1154517 |
| Base 8 | 512278 | 512438 |
| Base 9 | 320029 | 320159 |
| Base 10 | 2114310 | 2115510 |
| Base 11 | 1498111 | 1499211 |
| Base 12 | 1029b12 | 102ab12 |
| Base 13 | 981513 | 982413 |
| Base 14 | 79c314 | 79d114 |
| Base 15 | 63e815 | 640515 |
| Base 16 | 529716 | 52a316 |