Compare 19918 vs 19919
| Property | 19918 | 19919 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 21 × 231 × 4331 | 199191 |
| Prime factorization | 2 × 23 × 433 | 19919 |
| Divisors count | 8 | 2 |
| Divisors | 1, 2, 23, 46, 433, 866, 9959, 19918 | 1, 19919 |
| Number of properties | 0 | 7 |
| Additive primes | 1046th | |
| Chen primes | 1107th | |
| Harmonic primes | 816th | |
| Isolated primes | 1573rd | |
| Primes | 2252nd | |
| Sexy primes (2nd member) | 691st | |
| Sophie germain primes | 325th | |
| Roman numberals | ||
| Base 2 | 1001101110011102 | 1001101110011112 |
| Base 3 | 10000222013 | 10000222023 |
| Base 4 | 103130324 | 103130334 |
| Base 5 | 11141335 | 11141345 |
| Base 6 | 2321146 | 2321156 |
| Base 7 | 1120337 | 1120347 |
| Base 8 | 467168 | 467178 |
| Base 9 | 302819 | 302829 |
| Base 10 | 1991810 | 1991910 |
| Base 11 | 13a6811 | 13a6911 |
| Base 12 | b63a12 | b63b12 |
| Base 13 | 90b213 | 90b313 |
| Base 14 | 738a14 | 738b14 |
| Base 15 | 5d7d15 | 5d7e15 |
| Base 16 | 4dce16 | 4dcf16 |