Compare 21187 vs 21198
| Property | 21187 | 21198 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 3 |
| Prime factorization | 211871 | 21 × 31 × 35331 |
| Prime factorization | 21187 | 2 × 3 × 3533 |
| Divisors count | 2 | 8 |
| Divisors | 1, 21187 | 1, 2, 3, 6, 3533, 7066, 10599, 21198 |
| 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 | 1010010110011102 |
| Base 3 | 10020012013 | 10020020103 |
| Base 4 | 110230034 | 110230324 |
| Base 5 | 11342225 | 11342435 |
| Base 6 | 2420316 | 2420506 |
| Base 7 | 1155257 | 1155427 |
| Base 8 | 513038 | 513168 |
| Base 9 | 320519 | 320639 |
| Base 10 | 2118710 | 2119810 |
| Base 11 | 14a1111 | 14a2111 |
| Base 12 | 1031712 | 1032612 |
| Base 13 | 984a13 | 985813 |
| Base 14 | 7a1514 | 7a2214 |
| Base 15 | 642715 | 643315 |
| Base 16 | 52c316 | 52ce16 |