Compare 21191 vs 21521
| Property | 21191 | 21521 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 211911 | 215211 |
| Prime factorization | 21191 | 21521 |
| Divisors count | 2 | 2 |
| Divisors | 1, 21191 | 1, 21521 |
| Number of properties | 7 | 7 |
| Additive primes | 1119th | |
| Chen primes | 1171st | 1184th |
| Cousin primes (2nd member) | 361st | 368th |
| Primes | 2383rd | 2415th |
| Prime triplets (2nd member) | 178th | 183rd |
| Pythagorean primes | 1197th | |
| Super primes | 354th | |
| Twin primes (1st member) | 361st | 365th |
| Ulam primes | 179th | |
| Roman numberals | ||
| Base 2 | 1010010110001112 | 1010100000100012 |
| Base 3 | 10020012123 | 10021120023 |
| Base 4 | 110230134 | 111001014 |
| Base 5 | 11342315 | 11420415 |
| Base 6 | 2420356 | 2433456 |
| Base 7 | 1155327 | 1165137 |
| Base 8 | 513078 | 520218 |
| Base 9 | 320559 | 324629 |
| Base 10 | 2119110 | 2152110 |
| Base 11 | 14a1511 | 1519511 |
| Base 12 | 1031b12 | 1055512 |
| Base 13 | 985113 | 9a4613 |
| Base 14 | 7a1914 | 7bb314 |
| Base 15 | 642b15 | 659b15 |
| Base 16 | 52c716 | 541116 |