Compare 20663 vs 20666
| Property | 20663 | 20666 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 206631 | 21 × 103331 |
| Prime factorization | 20663 | 2 × 10333 |
| Divisors count | 2 | 4 |
| Divisors | 1, 20663 | 1, 2, 10333, 20666 |
| Number of properties | 7 | 1 |
| Additive primes | 1081st | |
| Chen primes | 1144th | |
| Harmonic primes | 850th | |
| Isolated primes | 1627th | |
| Long primes | 886th | |
| Primes | 2328th | |
| Safe primes | 197th | |
| Semiprimes | 5248th | |
| Roman numberals | ||
| Base 2 | 1010000101101112 | 1010000101110102 |
| Base 3 | 10011000223 | 10011001023 |
| Base 4 | 110023134 | 110023224 |
| Base 5 | 11301235 | 11301315 |
| Base 6 | 2353556 | 2354026 |
| Base 7 | 1141467 | 1141527 |
| Base 8 | 502678 | 502728 |
| Base 9 | 313089 | 313129 |
| Base 10 | 2066310 | 2066610 |
| Base 11 | 1458511 | 1458811 |
| Base 12 | bb5b12 | bb6212 |
| Base 13 | 953613 | 953913 |
| Base 14 | 775d14 | 776214 |
| Base 15 | 61c815 | 61cb15 |
| Base 16 | 50b716 | 50ba16 |