Compare 19997 vs 20001
| Property | 19997 | 20001 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 3 |
| Prime factorization | 199971 | 31 × 591 × 1131 |
| Prime factorization | 19997 | 3 × 59 × 113 |
| Divisors count | 2 | 8 |
| Divisors | 1, 19997 | 1, 3, 59, 113, 177, 339, 6667, 20001 |
| Number of properties | 9 | 0 |
| 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 | 1001110000111012 | 1001110001000012 |
| Base 3 | 10001021223 | 10001022103 |
| Base 4 | 103201314 | 103202014 |
| Base 5 | 11144425 | 11200015 |
| Base 6 | 2323256 | 2323336 |
| Base 7 | 1122057 | 1122127 |
| Base 8 | 470358 | 470418 |
| Base 9 | 303789 | 303839 |
| Base 10 | 1999710 | 2000110 |
| Base 11 | 1402a11 | 1403311 |
| Base 12 | b6a512 | b6a912 |
| Base 13 | 914313 | 914713 |
| Base 14 | 740514 | 740914 |
| Base 15 | 5dd215 | 5dd615 |
| Base 16 | 4e1d16 | 4e2116 |