Compare 19 vs 53

Unique factors11
Total factors11
Prime factorization191531
Prime factorization1953
Divisors count22
Divisors1, 191, 53
Number of properties1818
Centered triangular primes1st 
Chen primes8th15th
Class 1+ primes 10th
Cousin primes (1st member)4th 
Cuban primes 12nd 
Good primes 7th
Happy primes3rd 
Isolated primes 5th
Left-truncatable primes 11th
Long primes3rd 
Pierpont primes7th 
Pierpont primes of the 2nd kind 10th
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 
Pythagorean primes 7th
Restricted right-truncatable primes 1st
Right-truncatable primes 9th
Sexy primes (1st member) 11th
Sexy primes (2nd member)4th10th
Sexy prime quadrupletss (3rd member) 3rd
Sexy prime triplets (2nd member) 7th
Sexy prime triplets (3rd member)2nd6th
Solinas primes7th 
Sophie germain primes 8th
Twin primes (2nd member)4th 
Two-sided primes 7th
Ulam primes 6th
Roman numberalsXIXLIII
Base 21001121101012
Base 3201312223
Base 410343114
Base 53452035
Base 63161256
Base 72571047
Base 8238658
Base 9219589
Base 1019105310
Base 1118114911
Base 1217124512
Base 1316134113
Base 1415143b14
Base 1514153815
Base 1613163516
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