Compare 20639 vs 20663
| Property | 20639 | 20663 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 206391 | 206631 |
| Prime factorization | 20639 | 20663 |
| Divisors count | 2 | 2 |
| Divisors | 1, 20639 | 1, 20663 |
| Number of properties | 4 | 7 |
| Additive primes | 1081st | |
| Chen primes | 1143rd | 1144th |
| Happy primes | 384th | |
| Harmonic primes | 850th | |
| Isolated primes | 1627th | |
| Long primes | 886th | |
| Primes | 2326th | 2328th |
| Safe primes | 197th | |
| Twin primes (1st member) | 351st | |
| Roman numberals | ||
| Base 2 | 1010000100111112 | 1010000101101112 |
| Base 3 | 10010221023 | 10011000223 |
| Base 4 | 110021334 | 110023134 |
| Base 5 | 11300245 | 11301235 |
| Base 6 | 2353156 | 2353556 |
| Base 7 | 1141137 | 1141467 |
| Base 8 | 502378 | 502678 |
| Base 9 | 312729 | 313089 |
| Base 10 | 2063910 | 2066310 |
| Base 11 | 1456311 | 1458511 |
| Base 12 | bb3b12 | bb5b12 |
| Base 13 | 951813 | 953613 |
| Base 14 | 774314 | 775d14 |
| Base 15 | 61ae15 | 61c815 |
| Base 16 | 509f16 | 50b716 |