Compare 20639 vs 21191
| Property | 20639 | 21191 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 206391 | 211911 |
| Prime factorization | 20639 | 21191 |
| Divisors count | 2 | 2 |
| Divisors | 1, 20639 | 1, 21191 |
| Number of properties | 4 | 7 |
| Chen primes | 1143rd | 1171st |
| Cousin primes (2nd member) | 361st | |
| Happy primes | 384th | |
| Primes | 2326th | 2383rd |
| Prime triplets (2nd member) | 178th | |
| Super primes | 354th | |
| Twin primes (1st member) | 351st | 361st |
| Ulam primes | 179th | |
| Roman numberals | ||
| Base 2 | 1010000100111112 | 1010010110001112 |
| Base 3 | 10010221023 | 10020012123 |
| Base 4 | 110021334 | 110230134 |
| Base 5 | 11300245 | 11342315 |
| Base 6 | 2353156 | 2420356 |
| Base 7 | 1141137 | 1155327 |
| Base 8 | 502378 | 513078 |
| Base 9 | 312729 | 320559 |
| Base 10 | 2063910 | 2119110 |
| Base 11 | 1456311 | 14a1511 |
| Base 12 | bb3b12 | 1031b12 |
| Base 13 | 951813 | 985113 |
| Base 14 | 774314 | 7a1914 |
| Base 15 | 61ae15 | 642b15 |
| Base 16 | 509f16 | 52c716 |