Compare 20638 vs 20639
| Property | 20638 | 20639 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 21 × 171 × 6071 | 206391 |
| Prime factorization | 2 × 17 × 607 | 20639 |
| Divisors count | 8 | 2 |
| Divisors | 1, 2, 17, 34, 607, 1214, 10319, 20638 | 1, 20639 |
| Number of properties | 0 | 4 |
| Chen primes | 1143rd | |
| Happy primes | 384th | |
| Primes | 2326th | |
| Twin primes (1st member) | 351st | |
| Roman numberals | ||
| Base 2 | 1010000100111102 | 1010000100111112 |
| Base 3 | 10010221013 | 10010221023 |
| Base 4 | 110021324 | 110021334 |
| Base 5 | 11300235 | 11300245 |
| Base 6 | 2353146 | 2353156 |
| Base 7 | 1141127 | 1141137 |
| Base 8 | 502368 | 502378 |
| Base 9 | 312719 | 312729 |
| Base 10 | 2063810 | 2063910 |
| Base 11 | 1456211 | 1456311 |
| Base 12 | bb3a12 | bb3b12 |
| Base 13 | 951713 | 951813 |
| Base 14 | 774214 | 774314 |
| Base 15 | 61ad15 | 61ae15 |
| Base 16 | 509e16 | 509f16 |