Compare 20921 vs 21187
| Property | 20921 | 21187 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 209211 | 211871 |
| Prime factorization | 20921 | 21187 |
| Divisors count | 2 | 2 |
| Divisors | 1, 20921 | 1, 21187 |
| Number of properties | 5 | 7 |
| Additive primes | 1107th | |
| Cousin primes (1st member) | 361st | |
| Harmonic primes | 864th | 874th |
| Isolated primes | 1642nd | 1663rd |
| Primes | 2353rd | 2382nd |
| Prime triplets (1st member) | 178th | |
| Pythagorean primes | 1170th | |
| Sexy primes (1st member) | 722nd | |
| Sophie germain primes | 339th | |
| Roman numberals | ||
| Base 2 | 1010001101110012 | 1010010110000112 |
| Base 3 | 10012002123 | 10020012013 |
| Base 4 | 110123214 | 110230034 |
| Base 5 | 11321415 | 11342225 |
| Base 6 | 2405056 | 2420316 |
| Base 7 | 1146657 | 1155257 |
| Base 8 | 506718 | 513038 |
| Base 9 | 316259 | 320519 |
| Base 10 | 2092110 | 2118710 |
| Base 11 | 1479a11 | 14a1111 |
| Base 12 | 1013512 | 1031712 |
| Base 13 | 96a413 | 984a13 |
| Base 14 | 78a514 | 7a1514 |
| Base 15 | 62eb15 | 642715 |
| Base 16 | 51b916 | 52c316 |