Compare 67 vs 191
| Property | 67 | 191 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 671 | 1911 |
| Prime factorization | 67 | 191 |
| Divisors count | 2 | 2 |
| Divisors | 1, 67 | 1, 191 |
| Number of properties | 17 | 16 |
| Additive primes | 12th | 24th |
| Chen primes | 17th | 34th |
| Class 1+ primes | 14th | |
| Cousin primes (1st member) | 7th | |
| Good primes | 9th | 16th |
| Harmonic primes | 6th | 15th |
| Isolated primes | 6th | |
| Left-truncatable primes | 12th | |
| Lucky primes | 7th | |
| Palindromic primes | 10th | |
| Pierpont primes of the 2nd kind | 14th | |
| Primes | 19th | 43rd |
| Prime quadruplets (1st member) | 4th | |
| Prime triplets (1st member) | 8th | 13th |
| Sexy primes (1st member) | 13th | 25th |
| Sexy primes (2nd member) | 12th | |
| Sexy prime quadrupletss (2nd member) | 4th | |
| Sexy prime triplets (1st member) | 9th | |
| Sexy prime triplets (2nd member) | 8th | |
| Solinas primes | 16th | 25th |
| Sophie germain primes | 15th | |
| Super primes | 8th | 14th |
| Thabit primes | 6th | |
| Twin primes (1st member) | 14th | |
| Roman numberals | LXVII | CXCI |
| Base 2 | 10000112 | 101111112 |
| Base 3 | 21113 | 210023 |
| Base 4 | 10034 | 23334 |
| Base 5 | 2325 | 12315 |
| Base 6 | 1516 | 5156 |
| Base 7 | 1247 | 3627 |
| Base 8 | 1038 | 2778 |
| Base 9 | 749 | 2329 |
| Base 10 | 6710 | 19110 |
| Base 11 | 6111 | 16411 |
| Base 12 | 5712 | 13b12 |
| Base 13 | 5213 | 11913 |
| Base 14 | 4b14 | d914 |
| Base 15 | 4715 | cb15 |
| Base 16 | 4316 | bf16 |