Compare 20807 vs 21031
| Property | 20807 | 21031 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 208071 | 210311 |
| Prime factorization | 20807 | 21031 |
| Divisors count | 2 | 2 |
| Divisors | 1, 20807 | 1, 21031 |
| Number of properties | 7 | 3 |
| Additive primes | 1090th | 1098th |
| Chen primes | 1154th | |
| Harmonic primes | 858th | |
| Isolated primes | 1650th | |
| Long primes | 890th | |
| Primes | 2343rd | 2367th |
| Twin primes (1st member) | 355th | |
| Ulam primes | 174th | |
| Roman numberals | ||
| Base 2 | 1010001010001112 | 1010010001001112 |
| Base 3 | 10011121223 | 10012112213 |
| Base 4 | 110110134 | 110202134 |
| Base 5 | 11312125 | 11331115 |
| Base 6 | 2401556 | 2412116 |
| Base 7 | 1144437 | 1152137 |
| Base 8 | 505078 | 510478 |
| Base 9 | 314789 | 317579 |
| Base 10 | 2080710 | 2103110 |
| Base 11 | 146a611 | 1488a11 |
| Base 12 | 1005b12 | 1020712 |
| Base 13 | 961713 | 975a13 |
| Base 14 | 782314 | 794314 |
| Base 15 | 627215 | 637115 |
| Base 16 | 514716 | 522716 |