Compare 20631 vs 20639
| Property | 20631 | 20639 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 4 | 1 |
| Prime factorization | 31 × 131 × 232 | 206391 |
| Prime factorization | 3 × 13 × 23 × 23 | 20639 |
| Divisors count | 12 | 2 |
| Divisors | 1, 3, 13, 23, 39, 69, 299, 529, 897, 1587, 6877, 20631 | 1, 20639 |
| Number of properties | 0 | 4 |
| Chen primes | 1143rd | |
| Happy primes | 384th | |
| Primes | 2326th | |
| Twin primes (1st member) | 351st | |
| Roman numberals | ||
| Base 2 | 1010000100101112 | 1010000100111112 |
| Base 3 | 10010220103 | 10010221023 |
| Base 4 | 110021134 | 110021334 |
| Base 5 | 11300115 | 11300245 |
| Base 6 | 2353036 | 2353156 |
| Base 7 | 1141027 | 1141137 |
| Base 8 | 502278 | 502378 |
| Base 9 | 312639 | 312729 |
| Base 10 | 2063110 | 2063910 |
| Base 11 | 1455611 | 1456311 |
| Base 12 | bb3312 | bb3b12 |
| Base 13 | 951013 | 951813 |
| Base 14 | 773914 | 774314 |
| Base 15 | 61a615 | 61ae15 |
| Base 16 | 509716 | 509f16 |