Compare 21191 vs 22381
| Property | 21191 | 22381 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 211911 | 223811 |
| Prime factorization | 21191 | 22381 |
| Divisors count | 2 | 2 |
| Divisors | 1, 21191 | 1, 22381 |
| Number of properties | 7 | 8 |
| Chen primes | 1171st | |
| Cousin primes (2nd member) | 361st | |
| Happy primes | 411th | |
| Harmonic primes | 921st | |
| Isolated primes | 1748th | |
| Long primes | 948th | |
| Lucky primes | 402nd | |
| Primes | 2383rd | 2505th |
| Prime triplets (2nd member) | 178th | |
| Pythagorean primes | 1240th | |
| Super primes | 354th | |
| Twin primes (1st member) | 361st | |
| Ulam primes | 179th | 184th |
| Roman numberals | ||
| Base 2 | 1010010110001112 | 1010111011011012 |
| Base 3 | 10020012123 | 10102002213 |
| Base 4 | 110230134 | 111312314 |
| Base 5 | 11342315 | 12040115 |
| Base 6 | 2420356 | 2513416 |
| Base 7 | 1155327 | 1221527 |
| Base 8 | 513078 | 535558 |
| Base 9 | 320559 | 336279 |
| Base 10 | 2119110 | 2238110 |
| Base 11 | 14a1511 | 158a711 |
| Base 12 | 1031b12 | 10b5112 |
| Base 13 | 985113 | a25813 |
| Base 14 | 7a1914 | 822914 |
| Base 15 | 642b15 | 697115 |
| Base 16 | 52c716 | 576d16 |