Compare 18978 vs 18979
| Property | 18978 | 18979 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 21 × 31 × 31631 | 189791 |
| Prime factorization | 2 × 3 × 3163 | 18979 |
| Divisors count | 8 | 2 |
| Divisors | 1, 2, 3, 6, 3163, 6326, 9489, 18978 | 1, 18979 |
| Number of properties | 0 | 5 |
| Isolated primes | 1505th | |
| Long primes | 826th | |
| Lucky primes | 351st | |
| Primes | 2158th | |
| Sexy primes (2nd member) | 660th | |
| Roman numberals | ||
| Base 2 | 1001010001000102 | 1001010001000112 |
| Base 3 | 2220002203 | 2220002213 |
| Base 4 | 102202024 | 102202034 |
| Base 5 | 11014035 | 11014045 |
| Base 6 | 2235106 | 2235116 |
| Base 7 | 1062217 | 1062227 |
| Base 8 | 450428 | 450438 |
| Base 9 | 280269 | 280279 |
| Base 10 | 1897810 | 1897910 |
| Base 11 | 1329311 | 1329411 |
| Base 12 | ab9612 | ab9712 |
| Base 13 | 883b13 | 883c13 |
| Base 14 | 6cb814 | 6cb914 |
| Base 15 | 595315 | 595415 |
| Base 16 | 4a2216 | 4a2316 |