Compare 401 vs 421
| Property | 401 | 421 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 4011 | 4211 |
| Prime factorization | 401 | 421 |
| Divisors count | 2 | 2 |
| Divisors | 1, 401 | 1, 421 |
| Number of properties | 7 | 6 |
| Additive primes | 46th | 48th |
| Centered square primes | 8th | |
| Chen primes | 56th | |
| Cousin primes (2nd member) | 22nd | |
| Isolated primes | 38th | |
| Lucky primes | 23rd | |
| Primes | 79th | 82nd |
| Pythagorean primes | 38th | 40th |
| Super primes | 22nd | |
| Twin primes (2nd member) | 22nd | |
| Roman numberals | CDI | CDXXI |
| Base 2 | 1100100012 | 1101001012 |
| Base 3 | 1122123 | 1201213 |
| Base 4 | 121014 | 122114 |
| Base 5 | 31015 | 31415 |
| Base 6 | 15056 | 15416 |
| Base 7 | 11127 | 11417 |
| Base 8 | 6218 | 6458 |
| Base 9 | 4859 | 5179 |
| Base 10 | 40110 | 42110 |
| Base 11 | 33511 | 35311 |
| Base 12 | 29512 | 2b112 |
| Base 13 | 24b13 | 26513 |
| Base 14 | 20914 | 22114 |
| Base 15 | 1bb15 | 1d115 |
| Base 16 | 19116 | 1a516 |