Compare 421 vs 422
| Property | 421 | 422 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 4211 | 21 × 2111 |
| Prime factorization | 421 | 2 × 211 |
| Divisors count | 2 | 4 |
| Divisors | 1, 421 | 1, 2, 211, 422 |
| Number of properties | 6 | 1 |
| Additive primes | 48th | |
| Centered square primes | 8th | |
| Lucky primes | 23rd | |
| Primes | 82nd | |
| Pythagorean primes | 40th | |
| Semiprimes | 133rd | |
| Twin primes (2nd member) | 22nd | |
| Roman numberals | CDXXI | CDXXII |
| Base 2 | 1101001012 | 1101001102 |
| Base 3 | 1201213 | 1201223 |
| Base 4 | 122114 | 122124 |
| Base 5 | 31415 | 31425 |
| Base 6 | 15416 | 15426 |
| Base 7 | 11417 | 11427 |
| Base 8 | 6458 | 6468 |
| Base 9 | 5179 | 5189 |
| Base 10 | 42110 | 42210 |
| Base 11 | 35311 | 35411 |
| Base 12 | 2b112 | 2b212 |
| Base 13 | 26513 | 26613 |
| Base 14 | 22114 | 22214 |
| Base 15 | 1d115 | 1d215 |
| Base 16 | 1a516 | 1a616 |