Compare 21191 vs 21247
| Property | 21191 | 21247 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 211911 | 212471 |
| Prime factorization | 21191 | 21247 |
| Divisors count | 2 | 2 |
| Divisors | 1, 21191 | 1, 21247 |
| Number of properties | 7 | 3 |
| Chen primes | 1171st | |
| Cousin primes (2nd member) | 361st | |
| Isolated primes | 1667th | |
| Long primes | 907th | |
| Primes | 2383rd | 2388th |
| Prime triplets (2nd member) | 178th | |
| Super primes | 354th | |
| Twin primes (1st member) | 361st | |
| Ulam primes | 179th | |
| Roman numberals | ||
| Base 2 | 1010010110001112 | 1010010111111112 |
| Base 3 | 10020012123 | 10020102213 |
| Base 4 | 110230134 | 110233334 |
| Base 5 | 11342315 | 11344425 |
| Base 6 | 2420356 | 2422116 |
| Base 7 | 1155327 | 1156427 |
| Base 8 | 513078 | 513778 |
| Base 9 | 320559 | 321279 |
| Base 10 | 2119110 | 2124710 |
| Base 11 | 14a1511 | 14a6611 |
| Base 12 | 1031b12 | 1036712 |
| Base 13 | 985113 | 989513 |
| Base 14 | 7a1914 | 7a5914 |
| Base 15 | 642b15 | 646715 |
| Base 16 | 52c716 | 52ff16 |