Compare 331 vs 401
| Property | 331 | 401 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 3311 | 4011 |
| Prime factorization | 331 | 401 |
| Divisors count | 2 | 2 |
| Divisors | 1, 331 | 1, 401 |
| Number of properties | 10 | 7 |
| Additive primes | 39th | 46th |
| Chen primes | 56th | |
| Cousin primes (2nd member) | 22nd | |
| Cuban primes 1 | 7th | |
| Good primes | 24th | |
| Happy primes | 17th | |
| Harmonic primes | 28th | |
| Isolated primes | 28th | 38th |
| Lucky primes | 19th | |
| Primes | 67th | 79th |
| Pythagorean primes | 38th | |
| Sexy primes (1st member) | 37th | |
| Super primes | 19th | 22nd |
| Roman numberals | CCCXXXI | CDI |
| Base 2 | 1010010112 | 1100100012 |
| Base 3 | 1100213 | 1122123 |
| Base 4 | 110234 | 121014 |
| Base 5 | 23115 | 31015 |
| Base 6 | 13116 | 15056 |
| Base 7 | 6527 | 11127 |
| Base 8 | 5138 | 6218 |
| Base 9 | 4079 | 4859 |
| Base 10 | 33110 | 40110 |
| Base 11 | 28111 | 33511 |
| Base 12 | 23712 | 29512 |
| Base 13 | 1c613 | 24b13 |
| Base 14 | 19914 | 20914 |
| Base 15 | 17115 | 1bb15 |
| Base 16 | 14b16 | 19116 |