Compare 13 vs 26

Property1326
Typeprimesemiprime
Unique factors12
Total factors12
Prime factorization13121 × 131
Prime factorization132 × 13
Divisors count24
Divisors1, 131, 2, 13, 26
Number of properties321
Centered square primes2nd 
Chen primes6th 
Cousin primes (1st member)3rd 
Cuban primes 21st 
Emirps1st 
Fibonacci primes4th 
Happy primes2nd 
Harmonic primes2nd 
Left-truncatable primes5th 
Lucky primes3rd 
Multiplicative primes5th 
Pierpont primes5th 
Primes6th 
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)3rd 
Prime triplets (3rd member)2nd 
Proth primes3rd 
Pythagorean primes2nd 
Semiprimes 10th
Sexy primes (1st member)4th 
Sexy primes (2nd member)2nd 
Sexy prime triplets (2nd member)2nd 
Solinas primes5th 
Thabit primes of the 2nd kind2nd 
Twin primes (2nd member)3rd 
Ulam primes4th 
Wilson primes2nd 
Roman numberalsXIIIXXVI
Base 211012110102
Base 311132223
Base 43141224
Base 52351015
Base 6216426
Base 7167357
Base 8158328
Base 9149289
Base 1013102610
Base 1112112411
Base 1211122212
Base 1310132013
Base 14d141c14
Base 15d151b15
Base 16d161a16
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