Compare 20639 vs 20647
| Property | 20639 | 20647 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 206391 | 111 × 18771 |
| Prime factorization | 20639 | 11 × 1877 |
| Divisors count | 2 | 4 |
| Divisors | 1, 20639 | 1, 11, 1877, 20647 |
| Number of properties | 4 | 1 |
| Chen primes | 1143rd | |
| Happy primes | 384th | |
| Primes | 2326th | |
| Semiprimes | 5241st | |
| Twin primes (1st member) | 351st | |
| Roman numberals | ||
| Base 2 | 1010000100111112 | 1010000101001112 |
| Base 3 | 10010221023 | 10010222013 |
| Base 4 | 110021334 | 110022134 |
| Base 5 | 11300245 | 11300425 |
| Base 6 | 2353156 | 2353316 |
| Base 7 | 1141137 | 1141247 |
| Base 8 | 502378 | 502478 |
| Base 9 | 312729 | 312819 |
| Base 10 | 2063910 | 2064710 |
| Base 11 | 1456311 | 1457011 |
| Base 12 | bb3b12 | bb4712 |
| Base 13 | 951813 | 952313 |
| Base 14 | 774314 | 774b14 |
| Base 15 | 61ae15 | 61b715 |
| Base 16 | 509f16 | 50a716 |