Compare 20809 vs 20981
| Property | 20809 | 20981 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 208091 | 209811 |
| Prime factorization | 20809 | 20981 |
| Divisors count | 2 | 2 |
| Divisors | 1, 20809 | 1, 20981 |
| Number of properties | 5 | 5 |
| Additive primes | 1091st | |
| Chen primes | 1161st | |
| Good primes | 265th | |
| Harmonic primes | 859th | |
| Primes | 2344th | 2359th |
| Pythagorean primes | 1165th | 1172nd |
| Twin primes (1st member) | 357th | |
| Twin primes (2nd member) | 355th | |
| Roman numberals | ||
| Base 2 | 1010001010010012 | 1010001111101012 |
| Base 3 | 10011122013 | 10012100023 |
| Base 4 | 110110214 | 110133114 |
| Base 5 | 11312145 | 11324115 |
| Base 6 | 2402016 | 2410456 |
| Base 7 | 1144457 | 1151127 |
| Base 8 | 505118 | 507658 |
| Base 9 | 314819 | 317029 |
| Base 10 | 2080910 | 2098110 |
| Base 11 | 146a811 | 1484411 |
| Base 12 | 1006112 | 1018512 |
| Base 13 | 961913 | 971c13 |
| Base 14 | 782514 | 790914 |
| Base 15 | 627415 | 633b15 |
| Base 16 | 514916 | 51f516 |