Compare 21187 vs 21197
| Property | 21187 | 21197 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 3 |
| Prime factorization | 211871 | 111 × 411 × 471 |
| Prime factorization | 21187 | 11 × 41 × 47 |
| Divisors count | 2 | 8 |
| Divisors | 1, 21187 | 1, 11, 41, 47, 451, 517, 1927, 21197 |
| Number of properties | 7 | 0 |
| Additive primes | 1107th | |
| Cousin primes (1st member) | 361st | |
| Harmonic primes | 874th | |
| Isolated primes | 1663rd | |
| Primes | 2382nd | |
| Prime triplets (1st member) | 178th | |
| Sexy primes (1st member) | 722nd | |
| Roman numberals | ||
| Base 2 | 1010010110000112 | 1010010110011012 |
| Base 3 | 10020012013 | 10020020023 |
| Base 4 | 110230034 | 110230314 |
| Base 5 | 11342225 | 11342425 |
| Base 6 | 2420316 | 2420456 |
| Base 7 | 1155257 | 1155417 |
| Base 8 | 513038 | 513158 |
| Base 9 | 320519 | 320629 |
| Base 10 | 2118710 | 2119710 |
| Base 11 | 14a1111 | 14a2011 |
| Base 12 | 1031712 | 1032512 |
| Base 13 | 984a13 | 985713 |
| Base 14 | 7a1514 | 7a2114 |
| Base 15 | 642715 | 643215 |
| Base 16 | 52c316 | 52cd16 |