Compare 186 vs 191
| Property | 186 | 191 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 21 × 31 × 311 | 1911 |
| Prime factorization | 2 × 3 × 31 | 191 |
| Divisors count | 8 | 2 |
| Divisors | 1, 2, 3, 6, 31, 62, 93, 186 | 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 | CLXXXVI | CXCI |
| Base 2 | 101110102 | 101111112 |
| Base 3 | 202203 | 210023 |
| Base 4 | 23224 | 23334 |
| Base 5 | 12215 | 12315 |
| Base 6 | 5106 | 5156 |
| Base 7 | 3547 | 3627 |
| Base 8 | 2728 | 2778 |
| Base 9 | 2269 | 2329 |
| Base 10 | 18610 | 19110 |
| Base 11 | 15a11 | 16411 |
| Base 12 | 13612 | 13b12 |
| Base 13 | 11413 | 11913 |
| Base 14 | d414 | d914 |
| Base 15 | c615 | cb15 |
| Base 16 | ba16 | bf16 |