Compare 401 vs 409
| Property | 401 | 409 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 4011 | 4091 |
| Prime factorization | 401 | 409 |
| Divisors count | 2 | 2 |
| Divisors | 1, 401 | 1, 409 |
| Number of properties | 7 | 9 |
| Additive primes | 46th | 47th |
| Centered triangular primes | 5th | |
| Chen primes | 56th | 57th |
| Cousin primes (2nd member) | 22nd | |
| Happy primes | 22nd | |
| Isolated primes | 38th | 39th |
| Lucky primes | 22nd | |
| Primes | 79th | 80th |
| Pythagorean primes | 38th | 39th |
| Super primes | 22nd | |
| Ulam primes | 11th | |
| Roman numberals | CDI | CDIX |
| Base 2 | 1100100012 | 1100110012 |
| Base 3 | 1122123 | 1200113 |
| Base 4 | 121014 | 121214 |
| Base 5 | 31015 | 31145 |
| Base 6 | 15056 | 15216 |
| Base 7 | 11127 | 11237 |
| Base 8 | 6218 | 6318 |
| Base 9 | 4859 | 5049 |
| Base 10 | 40110 | 40910 |
| Base 11 | 33511 | 34211 |
| Base 12 | 29512 | 2a112 |
| Base 13 | 24b13 | 25613 |
| Base 14 | 20914 | 21314 |
| Base 15 | 1bb15 | 1c415 |
| Base 16 | 19116 | 19916 |