Compare 20639 vs 21143
| Property | 20639 | 21143 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 206391 | 211431 |
| Prime factorization | 20639 | 21143 |
| Divisors count | 2 | 2 |
| Divisors | 1, 20639 | 1, 21143 |
| Number of properties | 4 | 9 |
| Additive primes | 1103rd | |
| Chen primes | 1143rd | 1167th |
| Cousin primes (2nd member) | 360th | |
| Happy primes | 384th | 393rd |
| Harmonic primes | 873rd | |
| Isolated primes | 1657th | |
| Long primes | 903rd | |
| Primes | 2326th | 2376th |
| Sexy primes (1st member) | 719th | |
| Twin primes (1st member) | 351st | |
| Roman numberals | ||
| Base 2 | 1010000100111112 | 1010010100101112 |
| Base 3 | 10010221023 | 10020000023 |
| Base 4 | 110021334 | 110221134 |
| Base 5 | 11300245 | 11340335 |
| Base 6 | 2353156 | 2415156 |
| Base 7 | 1141137 | 1154337 |
| Base 8 | 502378 | 512278 |
| Base 9 | 312729 | 320029 |
| Base 10 | 2063910 | 2114310 |
| Base 11 | 1456311 | 1498111 |
| Base 12 | bb3b12 | 1029b12 |
| Base 13 | 951813 | 981513 |
| Base 14 | 774314 | 79c314 |
| Base 15 | 61ae15 | 63e815 |
| Base 16 | 509f16 | 529716 |