Compare 19 vs 127
| Property | 19 | 127 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 191 | 1271 |
| Prime factorization | 19 | 127 |
| Divisors count | 2 | 2 |
| Divisors | 1, 19 | 1, 127 |
| Number of properties | 18 | 13 |
| Centered triangular primes | 1st | |
| Chen primes | 8th | 25th |
| Class 1+ primes | 13th | |
| Cousin primes (1st member) | 4th | 12th |
| Cuban primes 1 | 2nd | 5th |
| Double mersenne primes | 2nd | |
| Good primes | 13th | |
| Happy primes | 3rd | |
| Isolated primes | 12th | |
| Long primes | 3rd | |
| Lucky primes | 10th | |
| Mersenne primes | 4th | |
| Pierpont primes | 7th | |
| Pierpont primes of the 2nd kind | 13th | |
| Primes | 8th | 31st |
| Prime quadruplets (4th member) | 2nd | |
| Prime quintuplet 1s (5th member) | 1st | |
| Prime quintuplet 2s (4th member) | 2nd | |
| Prime sextuplets (5th member) | 1st | |
| Prime triplets (2nd member) | 5th | |
| Prime triplets (3rd member) | 4th | |
| Sexy primes (2nd member) | 4th | |
| Sexy prime triplets (3rd member) | 2nd | |
| Solinas primes | 7th | 22nd |
| Super primes | 11th | |
| Twin primes (2nd member) | 4th | |
| Roman numberals | XIX | CXXVII |
| Base 2 | 100112 | 11111112 |
| Base 3 | 2013 | 112013 |
| Base 4 | 1034 | 13334 |
| Base 5 | 345 | 10025 |
| Base 6 | 316 | 3316 |
| Base 7 | 257 | 2417 |
| Base 8 | 238 | 1778 |
| Base 9 | 219 | 1519 |
| Base 10 | 1910 | 12710 |
| Base 11 | 1811 | 10611 |
| Base 12 | 1712 | a712 |
| Base 13 | 1613 | 9a13 |
| Base 14 | 1514 | 9114 |
| Base 15 | 1415 | 8715 |
| Base 16 | 1316 | 7f16 |