Compare 421 vs 427
| Property | 421 | 427 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 4211 | 71 × 611 |
| Prime factorization | 421 | 7 × 61 |
| Divisors count | 2 | 4 |
| Divisors | 1, 421 | 1, 7, 61, 427 |
| Number of properties | 6 | 1 |
| Additive primes | 48th | |
| Centered square primes | 8th | |
| Lucky primes | 23rd | |
| Primes | 82nd | |
| Pythagorean primes | 40th | |
| Semiprimes | 134th | |
| Twin primes (2nd member) | 22nd | |
| Roman numberals | CDXXI | CDXXVII |
| Base 2 | 1101001012 | 1101010112 |
| Base 3 | 1201213 | 1202113 |
| Base 4 | 122114 | 122234 |
| Base 5 | 31415 | 32025 |
| Base 6 | 15416 | 15516 |
| Base 7 | 11417 | 11507 |
| Base 8 | 6458 | 6538 |
| Base 9 | 5179 | 5249 |
| Base 10 | 42110 | 42710 |
| Base 11 | 35311 | 35911 |
| Base 12 | 2b112 | 2b712 |
| Base 13 | 26513 | 26b13 |
| Base 14 | 22114 | 22714 |
| Base 15 | 1d115 | 1d715 |
| Base 16 | 1a516 | 1ab16 |