Compare 19988 vs 19997
| Property | 19988 | 19997 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 4 | 1 |
| Prime factorization | 22 × 191 × 2631 | 199971 |
| Prime factorization | 2 × 2 × 19 × 263 | 19997 |
| Divisors count | 12 | 2 |
| Divisors | 1, 2, 4, 19, 38, 76, 263, 526, 1052, 4997, 9994, 19988 | 1, 19997 |
| Number of properties | 0 | 9 |
| Chen primes | 1112th | |
| Cousin primes (2nd member) | 344th | |
| Happy primes | 377th | |
| Harmonic primes | 821st | |
| Isolated primes | 1579th | |
| Primes | 2262nd | |
| Prime triplets (3rd member) | 168th | |
| Pythagorean primes | 1125th | |
| Sexy primes (2nd member) | 693rd | |
| Roman numberals | ||
| Base 2 | 1001110000101002 | 1001110000111012 |
| Base 3 | 10001020223 | 10001021223 |
| Base 4 | 103201104 | 103201314 |
| Base 5 | 11144235 | 11144425 |
| Base 6 | 2323126 | 2323256 |
| Base 7 | 1121637 | 1122057 |
| Base 8 | 470248 | 470358 |
| Base 9 | 303689 | 303789 |
| Base 10 | 1998810 | 1999710 |
| Base 11 | 1402111 | 1402a11 |
| Base 12 | b69812 | b6a512 |
| Base 13 | 913713 | 914313 |
| Base 14 | 73da14 | 740514 |
| Base 15 | 5dc815 | 5dd215 |
| Base 16 | 4e1416 | 4e1d16 |