Compare 21191 vs 21647
| Property | 21191 | 21647 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 211911 | 216471 |
| Prime factorization | 21191 | 21647 |
| Divisors count | 2 | 2 |
| Divisors | 1, 21191 | 1, 21647 |
| Number of properties | 7 | 4 |
| Chen primes | 1171st | 1193rd |
| Cousin primes (2nd member) | 361st | |
| Long primes | 918th | |
| Primes | 2383rd | 2430th |
| Prime triplets (2nd member) | 178th | |
| Super primes | 354th | |
| Twin primes (1st member) | 361st | 370th |
| Ulam primes | 179th | |
| Roman numberals | ||
| Base 2 | 1010010110001112 | 1010100100011112 |
| Base 3 | 10020012123 | 10022002023 |
| Base 4 | 110230134 | 111020334 |
| Base 5 | 11342315 | 11430425 |
| Base 6 | 2420356 | 2441156 |
| Base 7 | 1155327 | 1200537 |
| Base 8 | 513078 | 522178 |
| Base 9 | 320559 | 326229 |
| Base 10 | 2119110 | 2164710 |
| Base 11 | 14a1511 | 1529a11 |
| Base 12 | 1031b12 | 1063b12 |
| Base 13 | 985113 | 9b1213 |
| Base 14 | 7a1914 | 7c6314 |
| Base 15 | 642b15 | 663215 |
| Base 16 | 52c716 | 548f16 |