Compare 21187 vs 21195
| Property | 21187 | 21195 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 5 |
| Prime factorization | 211871 | 33 × 51 × 1571 |
| Prime factorization | 21187 | 3 × 3 × 3 × 5 × 157 |
| Divisors count | 2 | 16 |
| Divisors | 1, 21187 | 1, 3, 5, 9, 15, 27, 45, 135, 157, 471, 785, 1413, 2355, 4239, 7065, 21195 |
| 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 | 1010010110010112 |
| Base 3 | 10020012013 | 10020020003 |
| Base 4 | 110230034 | 110230234 |
| Base 5 | 11342225 | 11342405 |
| Base 6 | 2420316 | 2420436 |
| Base 7 | 1155257 | 1155367 |
| Base 8 | 513038 | 513138 |
| Base 9 | 320519 | 320609 |
| Base 10 | 2118710 | 2119510 |
| Base 11 | 14a1111 | 14a1911 |
| Base 12 | 1031712 | 1032312 |
| Base 13 | 984a13 | 985513 |
| Base 14 | 7a1514 | 7a1d14 |
| Base 15 | 642715 | 643015 |
| Base 16 | 52c316 | 52cb16 |