Compare 13 vs 43

Unique factors11
Total factors11
Prime factorization131431
Prime factorization1343
Divisors count22
Divisors1, 131, 43
Number of properties3212
Additive primes 9th
Centered heptagonal primes 1st
Centered square primes2nd 
Chen primes6th 
Cousin primes (1st member)3rd6th
Cuban primes 21st 
Fibonacci primes4th 
Happy primes2nd 
Harmonic primes2nd 
Left-truncatable primes5th9th
Lucky primes3rd6th
Multiplicative primes5th 
Pierpont primes5th 
Prime quadruplets (2nd member)2nd 
Prime quadruplets (4th member)1st 
Prime quintuplet 1s (3rd member)1st 
Prime quintuplet 2s (2nd member)2nd 
Prime quintuplet 2s (4th member)1st 
Prime sextuplets (3rd member)1st 
Prime triplets (1st member)4th 
Prime triplets (2nd member)3rd7th
Prime triplets (3rd member)2nd6th
Proth primes3rd 
Pythagorean primes2nd 
Sexy primes (1st member)4th 
Sexy primes (2nd member)2nd8th
Sexy prime triplets (2nd member)2nd 
Sexy prime triplets (3rd member) 5th
Solinas primes5th 
Thabit primes of the 2nd kind2nd 
Twin primes (2nd member)3rd6th
Ulam primes4th 
Wagstaff primes 3rd
Wilson primes2nd 
Roman numberalsXIIIXLIII
Base 2110121010112
Base 3111311213
Base 43142234
Base 52351335
Base 62161116
Base 7167617
Base 8158538
Base 9149479
Base 1013104310
Base 1112113a11
Base 1211123712
Base 1310133413
Base 14d143114
Base 15d152d15
Base 16d162b16
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