Compare 427 vs 431
| Property | 427 | 431 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 71 × 611 | 4311 |
| Prime factorization | 7 × 61 | 431 |
| Divisors count | 4 | 2 |
| Divisors | 1, 7, 61, 427 | 1, 431 |
| Number of properties | 1 | 10 |
| Chen primes | 59th | |
| Class 1+ primes | 16th | |
| Good primes | 27th | |
| Harmonic primes | 31st | |
| Pierpont primes of the 2nd kind | 16th | |
| Primes | 83rd | |
| Semiprimes | 134th | |
| Sophie germain primes | 23rd | |
| Super primes | 23rd | |
| Twin primes (1st member) | 23rd | |
| Ulam primes | 12th | |
| Roman numberals | CDXXVII | CDXXXI |
| Base 2 | 1101010112 | 1101011112 |
| Base 3 | 1202113 | 1202223 |
| Base 4 | 122234 | 122334 |
| Base 5 | 32025 | 32115 |
| Base 6 | 15516 | 15556 |
| Base 7 | 11507 | 11547 |
| Base 8 | 6538 | 6578 |
| Base 9 | 5249 | 5289 |
| Base 10 | 42710 | 43110 |
| Base 11 | 35911 | 36211 |
| Base 12 | 2b712 | 2bb12 |
| Base 13 | 26b13 | 27213 |
| Base 14 | 22714 | 22b14 |
| Base 15 | 1d715 | 1db15 |
| Base 16 | 1ab16 | 1af16 |