Compare 188 vs 191
| Property | 188 | 191 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 2 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 22 × 471 | 1911 |
| Prime factorization | 2 × 2 × 47 | 191 |
| Divisors count | 6 | 2 |
| Divisors | 1, 2, 4, 47, 94, 188 | 1, 191 |
| Number of properties | 0 | 16 |
| Additive primes | 24th | |
| Chen primes | 34th | |
| Class 1+ primes | 14th | |
| Good primes | 16th | |
| Harmonic primes | 15th | |
| Palindromic primes | 10th | |
| Pierpont primes of the 2nd kind | 14th | |
| Primes | 43rd | |
| Prime quadruplets (1st member) | 4th | |
| Prime triplets (1st member) | 13th | |
| Sexy primes (1st member) | 25th | |
| Solinas primes | 25th | |
| Sophie germain primes | 15th | |
| Super primes | 14th | |
| Thabit primes | 6th | |
| Twin primes (1st member) | 14th | |
| Roman numberals | CLXXXVIII | CXCI |
| Base 2 | 101111002 | 101111112 |
| Base 3 | 202223 | 210023 |
| Base 4 | 23304 | 23334 |
| Base 5 | 12235 | 12315 |
| Base 6 | 5126 | 5156 |
| Base 7 | 3567 | 3627 |
| Base 8 | 2748 | 2778 |
| Base 9 | 2289 | 2329 |
| Base 10 | 18810 | 19110 |
| Base 11 | 16111 | 16411 |
| Base 12 | 13812 | 13b12 |
| Base 13 | 11613 | 11913 |
| Base 14 | d614 | d914 |
| Base 15 | c815 | cb15 |
| Base 16 | bc16 | bf16 |