Compare 4 vs 19
Property | 4 | 19 |
---|---|---|
Type | semiprime | prime |
Unique factors | 1 | 1 |
Total factors | 2 | 1 |
Prime factorization | 22 | 191 |
Prime factorization | 2 × 2 | 19 |
Divisors count | 3 | 2 |
Divisors | 1, 2, 4 | 1, 19 |
Number of properties | 1 | 18 |
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 | |
Semiprimes | 1st | |
Sexy primes (2nd member) | 4th | |
Sexy prime triplets (3rd member) | 2nd | |
Solinas primes | 7th | |
Twin primes (2nd member) | 4th | |
Roman numberals | IV | XIX |
Base 2 | 1002 | 100112 |
Base 3 | 113 | 2013 |
Base 4 | 104 | 1034 |
Base 5 | 45 | 345 |
Base 6 | 46 | 316 |
Base 7 | 47 | 257 |
Base 8 | 48 | 238 |
Base 9 | 49 | 219 |
Base 10 | 410 | 1910 |
Base 11 | 411 | 1811 |
Base 12 | 412 | 1712 |
Base 13 | 413 | 1613 |
Base 14 | 414 | 1514 |
Base 15 | 415 | 1415 |
Base 16 | 416 | 1316 |