Compare 393 vs 401
| Property | 393 | 401 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 31 × 1311 | 4011 |
| Prime factorization | 3 × 131 | 401 |
| Divisors count | 4 | 2 |
| Divisors | 1, 3, 131, 393 | 1, 401 |
| Number of properties | 1 | 7 |
| Additive primes | 46th | |
| Chen primes | 56th | |
| Cousin primes (2nd member) | 22nd | |
| Isolated primes | 38th | |
| Primes | 79th | |
| Pythagorean primes | 38th | |
| Semiprimes | 123rd | |
| Super primes | 22nd | |
| Roman numberals | CCCXCIII | CDI |
| Base 2 | 1100010012 | 1100100012 |
| Base 3 | 1121203 | 1122123 |
| Base 4 | 120214 | 121014 |
| Base 5 | 30335 | 31015 |
| Base 6 | 14536 | 15056 |
| Base 7 | 11017 | 11127 |
| Base 8 | 6118 | 6218 |
| Base 9 | 4769 | 4859 |
| Base 10 | 39310 | 40110 |
| Base 11 | 32811 | 33511 |
| Base 12 | 28912 | 29512 |
| Base 13 | 24313 | 24b13 |
| Base 14 | 20114 | 20914 |
| Base 15 | 1b315 | 1bb15 |
| Base 16 | 18916 | 19116 |