Compare 20639 vs 20681
| Property | 20639 | 20681 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 206391 | 206811 |
| Prime factorization | 20639 | 20681 |
| Divisors count | 2 | 2 |
| Divisors | 1, 20639 | 1, 20681 |
| Number of properties | 4 | 5 |
| Additive primes | 1082nd | |
| Chen primes | 1143rd | |
| Good primes | 258th | |
| Happy primes | 384th | |
| Isolated primes | 1628th | |
| Primes | 2326th | 2329th |
| Pythagorean primes | 1158th | |
| Twin primes (1st member) | 351st | |
| Roman numberals | ||
| Base 2 | 1010000100111112 | 1010000110010012 |
| Base 3 | 10010221023 | 10011002223 |
| Base 4 | 110021334 | 110030214 |
| Base 5 | 11300245 | 11302115 |
| Base 6 | 2353156 | 2354256 |
| Base 7 | 1141137 | 1142037 |
| Base 8 | 502378 | 503118 |
| Base 9 | 312729 | 313289 |
| Base 10 | 2063910 | 2068110 |
| Base 11 | 1456311 | 145a111 |
| Base 12 | bb3b12 | bb7512 |
| Base 13 | 951813 | 954b13 |
| Base 14 | 774314 | 777314 |
| Base 15 | 61ae15 | 61db15 |
| Base 16 | 509f16 | 50c916 |