Compare 173 vs 178
| Property | 173 | 178 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 1731 | 21 × 891 |
| Prime factorization | 173 | 2 × 89 |
| Divisors count | 2 | 4 |
| Divisors | 1, 173 | 1, 2, 89, 178 |
| Number of properties | 9 | 1 |
| Additive primes | 22nd | |
| Isolated primes | 17th | |
| Left-truncatable primes | 19th | |
| Primes | 40th | |
| Pythagorean primes | 18th | |
| Semiprimes | 58th | |
| Sexy primes (1st member) | 24th | |
| Sexy primes (2nd member) | 23rd | |
| Sexy prime triplets (2nd member) | 13th | |
| Sophie germain primes | 13th | |
| Roman numberals | CLXXIII | CLXXVIII |
| Base 2 | 101011012 | 101100102 |
| Base 3 | 201023 | 201213 |
| Base 4 | 22314 | 23024 |
| Base 5 | 11435 | 12035 |
| Base 6 | 4456 | 4546 |
| Base 7 | 3357 | 3437 |
| Base 8 | 2558 | 2628 |
| Base 9 | 2129 | 2179 |
| Base 10 | 17310 | 17810 |
| Base 11 | 14811 | 15211 |
| Base 12 | 12512 | 12a12 |
| Base 13 | 10413 | 10913 |
| Base 14 | c514 | ca14 |
| Base 15 | b815 | bd15 |
| Base 16 | ad16 | b216 |