Compare 20639 vs 20807
| Property | 20639 | 20807 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 206391 | 208071 |
| Prime factorization | 20639 | 20807 |
| Divisors count | 2 | 2 |
| Divisors | 1, 20639 | 1, 20807 |
| Number of properties | 4 | 7 |
| Additive primes | 1090th | |
| Chen primes | 1143rd | 1154th |
| Happy primes | 384th | |
| Harmonic primes | 858th | |
| Long primes | 890th | |
| Primes | 2326th | 2343rd |
| Twin primes (1st member) | 351st | 355th |
| Ulam primes | 174th | |
| Roman numberals | ||
| Base 2 | 1010000100111112 | 1010001010001112 |
| Base 3 | 10010221023 | 10011121223 |
| Base 4 | 110021334 | 110110134 |
| Base 5 | 11300245 | 11312125 |
| Base 6 | 2353156 | 2401556 |
| Base 7 | 1141137 | 1144437 |
| Base 8 | 502378 | 505078 |
| Base 9 | 312729 | 314789 |
| Base 10 | 2063910 | 2080710 |
| Base 11 | 1456311 | 146a611 |
| Base 12 | bb3b12 | 1005b12 |
| Base 13 | 951813 | 961713 |
| Base 14 | 774314 | 782314 |
| Base 15 | 61ae15 | 627215 |
| Base 16 | 509f16 | 514716 |