Compare 20809 vs 20817
| Property | 20809 | 20817 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 2 |
| Total factors | 1 | 5 |
| Prime factorization | 208091 | 34 × 2571 |
| Prime factorization | 20809 | 3 × 3 × 3 × 3 × 257 |
| Divisors count | 2 | 10 |
| Divisors | 1, 20809 | 1, 3, 9, 27, 81, 257, 771, 2313, 6939, 20817 |
| Number of properties | 5 | 0 |
| Additive primes | 1091st | |
| Harmonic primes | 859th | |
| Primes | 2344th | |
| Pythagorean primes | 1165th | |
| Twin primes (2nd member) | 355th | |
| Roman numberals | ||
| Base 2 | 1010001010010012 | 1010001010100012 |
| Base 3 | 10011122013 | 10011200003 |
| Base 4 | 110110214 | 110111014 |
| Base 5 | 11312145 | 11312325 |
| Base 6 | 2402016 | 2402136 |
| Base 7 | 1144457 | 1144567 |
| Base 8 | 505118 | 505218 |
| Base 9 | 314819 | 315009 |
| Base 10 | 2080910 | 2081710 |
| Base 11 | 146a811 | 1470511 |
| Base 12 | 1006112 | 1006912 |
| Base 13 | 961913 | 962413 |
| Base 14 | 782514 | 782d14 |
| Base 15 | 627415 | 627c15 |
| Base 16 | 514916 | 515116 |