Compare 20910 vs 20921
| Property | 20910 | 20921 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 5 | 1 |
| Total factors | 5 | 1 |
| Prime factorization | 21 × 31 × 51 × 171 × 411 | 209211 |
| Prime factorization | 2 × 3 × 5 × 17 × 41 | 20921 |
| Divisors count | 32 | 2 |
| Divisors | 1, 2, 3, 5, 6, 10, 15, 17, 30, 34, 41, 51, 82, 85, 102, 123, 170, 205, 246, 255, 410, 510, 615, 697, 1230, 1394, 2091, 3485, 4182, 6970, 10455, 20910 | 1, 20921 |
| Number of properties | 0 | 5 |
| Harmonic primes | 864th | |
| Isolated primes | 1642nd | |
| Primes | 2353rd | |
| Pythagorean primes | 1170th | |
| Sophie germain primes | 339th | |
| Roman numberals | ||
| Base 2 | 1010001101011102 | 1010001101110012 |
| Base 3 | 10012001103 | 10012002123 |
| Base 4 | 110122324 | 110123214 |
| Base 5 | 11321205 | 11321415 |
| Base 6 | 2404506 | 2405056 |
| Base 7 | 1146517 | 1146657 |
| Base 8 | 506568 | 506718 |
| Base 9 | 316139 | 316259 |
| Base 10 | 2091010 | 2092110 |
| Base 11 | 1478a11 | 1479a11 |
| Base 12 | 1012612 | 1013512 |
| Base 13 | 969613 | 96a413 |
| Base 14 | 789814 | 78a514 |
| Base 15 | 62e015 | 62eb15 |
| Base 16 | 51ae16 | 51b916 |