Compare 20655 vs 20663
| Property | 20655 | 20663 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 7 | 1 |
| Prime factorization | 35 × 51 × 171 | 206631 |
| Prime factorization | 3 × 3 × 3 × 3 × 3 × 5 × 17 | 20663 |
| Divisors count | 24 | 2 |
| Divisors | 1, 3, 5, 9, 15, 17, 27, 45, 51, 81, 85, 135, 153, 243, 255, 405, 459, 765, 1215, 1377, 2295, 4131, 6885, 20655 | 1, 20663 |
| Number of properties | 0 | 7 |
| Additive primes | 1081st | |
| Chen primes | 1144th | |
| Harmonic primes | 850th | |
| Isolated primes | 1627th | |
| Long primes | 886th | |
| Primes | 2328th | |
| Safe primes | 197th | |
| Roman numberals | ||
| Base 2 | 1010000101011112 | 1010000101101112 |
| Base 3 | 10011000003 | 10011000223 |
| Base 4 | 110022334 | 110023134 |
| Base 5 | 11301105 | 11301235 |
| Base 6 | 2353436 | 2353556 |
| Base 7 | 1141357 | 1141467 |
| Base 8 | 502578 | 502678 |
| Base 9 | 313009 | 313089 |
| Base 10 | 2065510 | 2066310 |
| Base 11 | 1457811 | 1458511 |
| Base 12 | bb5312 | bb5b12 |
| Base 13 | 952b13 | 953613 |
| Base 14 | 775514 | 775d14 |
| Base 15 | 61c015 | 61c815 |
| Base 16 | 50af16 | 50b716 |