Compare 20857 vs 20921
| Property | 20857 | 20921 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 208571 | 209211 |
| Prime factorization | 20857 | 20921 |
| Divisors count | 2 | 2 |
| Divisors | 1, 20857 | 1, 20921 |
| Number of properties | 4 | 5 |
| Harmonic primes | 864th | |
| Isolated primes | 1637th | 1642nd |
| Long primes | 891st | |
| Primes | 2346th | 2353rd |
| Pythagorean primes | 1167th | 1170th |
| Sophie germain primes | 339th | |
| Roman numberals | ||
| Base 2 | 1010001011110012 | 1010001101110012 |
| Base 3 | 10011211113 | 10012002123 |
| Base 4 | 110113214 | 110123214 |
| Base 5 | 11314125 | 11321415 |
| Base 6 | 2403216 | 2405056 |
| Base 7 | 1145447 | 1146657 |
| Base 8 | 505718 | 506718 |
| Base 9 | 315449 | 316259 |
| Base 10 | 2085710 | 2092110 |
| Base 11 | 1474111 | 1479a11 |
| Base 12 | 100a112 | 1013512 |
| Base 13 | 965513 | 96a413 |
| Base 14 | 785b14 | 78a514 |
| Base 15 | 62a715 | 62eb15 |
| Base 16 | 517916 | 51b916 |