Compare 20981 vs 21191
| Property | 20981 | 21191 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 209811 | 211911 |
| Prime factorization | 20981 | 21191 |
| Divisors count | 2 | 2 |
| Divisors | 1, 20981 | 1, 21191 |
| Number of properties | 5 | 7 |
| Chen primes | 1161st | 1171st |
| Cousin primes (2nd member) | 361st | |
| Good primes | 265th | |
| Primes | 2359th | 2383rd |
| Prime triplets (2nd member) | 178th | |
| Pythagorean primes | 1172nd | |
| Super primes | 354th | |
| Twin primes (1st member) | 357th | 361st |
| Ulam primes | 179th | |
| Roman numberals | ||
| Base 2 | 1010001111101012 | 1010010110001112 |
| Base 3 | 10012100023 | 10020012123 |
| Base 4 | 110133114 | 110230134 |
| Base 5 | 11324115 | 11342315 |
| Base 6 | 2410456 | 2420356 |
| Base 7 | 1151127 | 1155327 |
| Base 8 | 507658 | 513078 |
| Base 9 | 317029 | 320559 |
| Base 10 | 2098110 | 2119110 |
| Base 11 | 1484411 | 14a1511 |
| Base 12 | 1018512 | 1031b12 |
| Base 13 | 971c13 | 985113 |
| Base 14 | 790914 | 7a1914 |
| Base 15 | 633b15 | 642b15 |
| Base 16 | 51f516 | 52c716 |