Compare 431 vs 491
| Property | 431 | 491 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 4311 | 4911 |
| Prime factorization | 431 | 491 |
| Divisors count | 2 | 2 |
| Divisors | 1, 431 | 1, 491 |
| Number of properties | 10 | 7 |
| Chen primes | 59th | 66th |
| Class 1+ primes | 16th | |
| Cousin primes (2nd member) | 26th | |
| Good primes | 27th | |
| Harmonic primes | 31st | 38th |
| Isolated primes | 47th | |
| Long primes | 34th | |
| Pierpont primes of the 2nd kind | 16th | |
| Primes | 83rd | 94th |
| Sophie germain primes | 23rd | 25th |
| Super primes | 23rd | |
| Twin primes (1st member) | 23rd | |
| Ulam primes | 12th | |
| Roman numberals | CDXXXI | CDXCI |
| Base 2 | 1101011112 | 1111010112 |
| Base 3 | 1202223 | 2000123 |
| Base 4 | 122334 | 132234 |
| Base 5 | 32115 | 34315 |
| Base 6 | 15556 | 21356 |
| Base 7 | 11547 | 13017 |
| Base 8 | 6578 | 7538 |
| Base 9 | 5289 | 6059 |
| Base 10 | 43110 | 49110 |
| Base 11 | 36211 | 40711 |
| Base 12 | 2bb12 | 34b12 |
| Base 13 | 27213 | 2ba13 |
| Base 14 | 22b14 | 27114 |
| Base 15 | 1db15 | 22b15 |
| Base 16 | 1af16 | 1eb16 |