Compare 20639 vs 20646
| Property | 20639 | 20646 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 4 |
| Total factors | 1 | 5 |
| Prime factorization | 206391 | 21 × 32 × 311 × 371 |
| Prime factorization | 20639 | 2 × 3 × 3 × 31 × 37 |
| Divisors count | 2 | 24 |
| Divisors | 1, 20639 | 1, 2, 3, 6, 9, 18, 31, 37, 62, 74, 93, 111, 186, 222, 279, 333, 558, 666, 1147, 2294, 3441, 6882, 10323, 20646 |
| Number of properties | 4 | 0 |
| Chen primes | 1143rd | |
| Happy primes | 384th | |
| Primes | 2326th | |
| Twin primes (1st member) | 351st | |
| Roman numberals | ||
| Base 2 | 1010000100111112 | 1010000101001102 |
| Base 3 | 10010221023 | 10010222003 |
| Base 4 | 110021334 | 110022124 |
| Base 5 | 11300245 | 11300415 |
| Base 6 | 2353156 | 2353306 |
| Base 7 | 1141137 | 1141237 |
| Base 8 | 502378 | 502468 |
| Base 9 | 312729 | 312809 |
| Base 10 | 2063910 | 2064610 |
| Base 11 | 1456311 | 1456a11 |
| Base 12 | bb3b12 | bb4612 |
| Base 13 | 951813 | 952213 |
| Base 14 | 774314 | 774a14 |
| Base 15 | 61ae15 | 61b615 |
| Base 16 | 509f16 | 50a616 |