Compare 20807 vs 21001
| Property | 20807 | 21001 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 208071 | 210011 |
| Prime factorization | 20807 | 21001 |
| Divisors count | 2 | 2 |
| Divisors | 1, 20807 | 1, 21001 |
| Number of properties | 7 | 5 |
| Additive primes | 1090th | |
| Chen primes | 1154th | 1162nd |
| Harmonic primes | 858th | 867th |
| Isolated primes | 1648th | |
| Long primes | 890th | |
| Primes | 2343rd | 2361st |
| Pythagorean primes | 1173rd | |
| Twin primes (1st member) | 355th | |
| Ulam primes | 174th | |
| Roman numberals | ||
| Base 2 | 1010001010001112 | 1010010000010012 |
| Base 3 | 10011121223 | 10012102113 |
| Base 4 | 110110134 | 110200214 |
| Base 5 | 11312125 | 11330015 |
| Base 6 | 2401556 | 2411216 |
| Base 7 | 1144437 | 1151417 |
| Base 8 | 505078 | 510118 |
| Base 9 | 314789 | 317249 |
| Base 10 | 2080710 | 2100110 |
| Base 11 | 146a611 | 1486211 |
| Base 12 | 1005b12 | 101a112 |
| Base 13 | 961713 | 973613 |
| Base 14 | 782314 | 792114 |
| Base 15 | 627215 | 635115 |
| Base 16 | 514716 | 520916 |