Compare 20921 vs 21143
| Property | 20921 | 21143 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 209211 | 211431 |
| Prime factorization | 20921 | 21143 |
| Divisors count | 2 | 2 |
| Divisors | 1, 20921 | 1, 21143 |
| Number of properties | 5 | 9 |
| Additive primes | 1103rd | |
| Chen primes | 1167th | |
| Cousin primes (2nd member) | 360th | |
| Happy primes | 393rd | |
| Harmonic primes | 864th | 873rd |
| Isolated primes | 1642nd | 1657th |
| Long primes | 903rd | |
| Primes | 2353rd | 2376th |
| Pythagorean primes | 1170th | |
| Sexy primes (1st member) | 719th | |
| Sophie germain primes | 339th | |
| Roman numberals | ||
| Base 2 | 1010001101110012 | 1010010100101112 |
| Base 3 | 10012002123 | 10020000023 |
| Base 4 | 110123214 | 110221134 |
| Base 5 | 11321415 | 11340335 |
| Base 6 | 2405056 | 2415156 |
| Base 7 | 1146657 | 1154337 |
| Base 8 | 506718 | 512278 |
| Base 9 | 316259 | 320029 |
| Base 10 | 2092110 | 2114310 |
| Base 11 | 1479a11 | 1498111 |
| Base 12 | 1013512 | 1029b12 |
| Base 13 | 96a413 | 981513 |
| Base 14 | 78a514 | 79c314 |
| Base 15 | 62eb15 | 63e815 |
| Base 16 | 51b916 | 529716 |