Compare 1 vs 19

Typecomposite numberprime
Unique factors01
Total factors01
Prime factorization191
Prime factorization19
Divisors count12
Divisors11, 19
Number of properties018
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 numberalsIXIX
Base 212100112
Base 3132013
Base 4141034
Base 515345
Base 616316
Base 717257
Base 818238
Base 919219
Base 101101910
Base 111111811
Base 121121712
Base 131131613
Base 141141514
Base 151151415
Base 161161316
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