Compare 20809 vs 20815
| Property | 20809 | 20815 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 3 |
| Prime factorization | 208091 | 51 × 231 × 1811 |
| Prime factorization | 20809 | 5 × 23 × 181 |
| Divisors count | 2 | 8 |
| Divisors | 1, 20809 | 1, 5, 23, 115, 181, 905, 4163, 20815 |
| 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 | 1010001010011112 |
| Base 3 | 10011122013 | 10011122213 |
| Base 4 | 110110214 | 110110334 |
| Base 5 | 11312145 | 11312305 |
| Base 6 | 2402016 | 2402116 |
| Base 7 | 1144457 | 1144547 |
| Base 8 | 505118 | 505178 |
| Base 9 | 314819 | 314879 |
| Base 10 | 2080910 | 2081510 |
| Base 11 | 146a811 | 1470311 |
| Base 12 | 1006112 | 1006712 |
| Base 13 | 961913 | 962213 |
| Base 14 | 782514 | 782b14 |
| Base 15 | 627415 | 627a15 |
| Base 16 | 514916 | 514f16 |