Compare 401 vs 405
| Property | 401 | 405 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 2 |
| Total factors | 1 | 5 |
| Prime factorization | 4011 | 34 × 51 |
| Prime factorization | 401 | 3 × 3 × 3 × 3 × 5 |
| Divisors count | 2 | 10 |
| Divisors | 1, 401 | 1, 3, 5, 9, 15, 27, 45, 81, 135, 405 |
| Number of properties | 7 | 0 |
| Additive primes | 46th | |
| Chen primes | 56th | |
| Cousin primes (2nd member) | 22nd | |
| Isolated primes | 38th | |
| Primes | 79th | |
| Pythagorean primes | 38th | |
| Super primes | 22nd | |
| Roman numberals | CDI | CDV |
| Base 2 | 1100100012 | 1100101012 |
| Base 3 | 1122123 | 1200003 |
| Base 4 | 121014 | 121114 |
| Base 5 | 31015 | 31105 |
| Base 6 | 15056 | 15136 |
| Base 7 | 11127 | 11167 |
| Base 8 | 6218 | 6258 |
| Base 9 | 4859 | 5009 |
| Base 10 | 40110 | 40510 |
| Base 11 | 33511 | 33911 |
| Base 12 | 29512 | 29912 |
| Base 13 | 24b13 | 25213 |
| Base 14 | 20914 | 20d14 |
| Base 15 | 1bb15 | 1c015 |
| Base 16 | 19116 | 19516 |