Compare 19961 vs 19966
| Property | 19961 | 19966 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 3 |
| Prime factorization | 199611 | 21 × 671 × 1491 |
| Prime factorization | 19961 | 2 × 67 × 149 |
| Divisors count | 2 | 8 |
| Divisors | 1, 19961 | 1, 2, 67, 134, 149, 298, 9983, 19966 |
| Number of properties | 5 | 0 |
| Chen primes | 1110th | |
| Good primes | 257th | |
| Primes | 2256th | |
| Pythagorean primes | 1122nd | |
| Twin primes (1st member) | 341st | |
| Roman numberals | ||
| Base 2 | 1001101111110012 | 1001101111111102 |
| Base 3 | 10001010223 | 10001011113 |
| Base 4 | 103133214 | 103133324 |
| Base 5 | 11143215 | 11143315 |
| Base 6 | 2322256 | 2322346 |
| Base 7 | 1121247 | 1121327 |
| Base 8 | 467718 | 467768 |
| Base 9 | 303389 | 303449 |
| Base 10 | 1996110 | 1996610 |
| Base 11 | 13aa711 | 1400111 |
| Base 12 | b67512 | b67a12 |
| Base 13 | 911613 | 911b13 |
| Base 14 | 73bb14 | 73c214 |
| Base 15 | 5dab15 | 5db115 |
| Base 16 | 4df916 | 4dfe16 |