Compare 20807 vs 20981
| Property | 20807 | 20981 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 208071 | 209811 |
| Prime factorization | 20807 | 20981 |
| Divisors count | 2 | 2 |
| Divisors | 1, 20807 | 1, 20981 |
| Number of properties | 7 | 5 |
| Additive primes | 1090th | |
| Chen primes | 1154th | 1161st |
| Good primes | 265th | |
| Harmonic primes | 858th | |
| Long primes | 890th | |
| Primes | 2343rd | 2359th |
| Pythagorean primes | 1172nd | |
| Twin primes (1st member) | 355th | 357th |
| Ulam primes | 174th | |
| Roman numberals | ||
| Base 2 | 1010001010001112 | 1010001111101012 |
| Base 3 | 10011121223 | 10012100023 |
| Base 4 | 110110134 | 110133114 |
| Base 5 | 11312125 | 11324115 |
| Base 6 | 2401556 | 2410456 |
| Base 7 | 1144437 | 1151127 |
| Base 8 | 505078 | 507658 |
| Base 9 | 314789 | 317029 |
| Base 10 | 2080710 | 2098110 |
| Base 11 | 146a611 | 1484411 |
| Base 12 | 1005b12 | 1018512 |
| Base 13 | 961713 | 971c13 |
| Base 14 | 782314 | 790914 |
| Base 15 | 627215 | 633b15 |
| Base 16 | 514716 | 51f516 |