Compare 19 vs 56
| Property | 19 | 56 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 2 |
| Total factors | 1 | 4 |
| Prime factorization | 191 | 23 × 71 |
| Prime factorization | 19 | 2 × 2 × 2 × 7 |
| Divisors count | 2 | 8 |
| Divisors | 1, 19 | 1, 2, 4, 7, 8, 14, 28, 56 |
| Number of properties | 18 | 0 |
| Centered triangular primes | 1st | |
| Chen primes | 8th | |
| Cousin primes (1st member) | 4th | |
| Cuban primes 1 | 2nd | |
| Happy primes | 3rd | |
| Long primes | 3rd | |
| Pierpont primes | 7th | |
| Primes | 8th | |
| 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 | |
| Twin primes (2nd member) | 4th | |
| Roman numberals | XIX | LVI |
| Base 2 | 100112 | 1110002 |
| Base 3 | 2013 | 20023 |
| Base 4 | 1034 | 3204 |
| Base 5 | 345 | 2115 |
| Base 6 | 316 | 1326 |
| Base 7 | 257 | 1107 |
| Base 8 | 238 | 708 |
| Base 9 | 219 | 629 |
| Base 10 | 1910 | 5610 |
| Base 11 | 1811 | 5111 |
| Base 12 | 1712 | 4812 |
| Base 13 | 1613 | 4413 |
| Base 14 | 1514 | 4014 |
| Base 15 | 1415 | 3b15 |
| Base 16 | 1316 | 3816 |