Compare 423 vs 431
| Property | 423 | 431 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 2 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 32 × 471 | 4311 |
| Prime factorization | 3 × 3 × 47 | 431 |
| Divisors count | 6 | 2 |
| Divisors | 1, 3, 9, 47, 141, 423 | 1, 431 |
| Number of properties | 0 | 10 |
| Chen primes | 59th | |
| Class 1+ primes | 16th | |
| Good primes | 27th | |
| Harmonic primes | 31st | |
| Pierpont primes of the 2nd kind | 16th | |
| Primes | 83rd | |
| Sophie germain primes | 23rd | |
| Super primes | 23rd | |
| Twin primes (1st member) | 23rd | |
| Ulam primes | 12th | |
| Roman numberals | CDXXIII | CDXXXI |
| Base 2 | 1101001112 | 1101011112 |
| Base 3 | 1202003 | 1202223 |
| Base 4 | 122134 | 122334 |
| Base 5 | 31435 | 32115 |
| Base 6 | 15436 | 15556 |
| Base 7 | 11437 | 11547 |
| Base 8 | 6478 | 6578 |
| Base 9 | 5209 | 5289 |
| Base 10 | 42310 | 43110 |
| Base 11 | 35511 | 36211 |
| Base 12 | 2b312 | 2bb12 |
| Base 13 | 26713 | 27213 |
| Base 14 | 22314 | 22b14 |
| Base 15 | 1d315 | 1db15 |
| Base 16 | 1a716 | 1af16 |