Compare 8 vs 13

Typecomposite numberprime
Unique factors11
Total factors31
Prime factorization23131
Prime factorization2 × 2 × 213
Divisors count42
Divisors1, 2, 4, 81, 13
Number of properties032
Centered square primes 2nd
Chen primes 6th
Cousin primes (1st member) 3rd
Cuban primes 2 1st
Emirps 1st
Fibonacci primes 4th
Happy primes 2nd
Harmonic primes 2nd
Left-truncatable primes 5th
Lucky primes 3rd
Multiplicative primes 5th
Pierpont primes 5th
Primes 6th
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 primes 3rd
Pythagorean primes 2nd
Sexy primes (1st member) 4th
Sexy primes (2nd member) 2nd
Sexy prime triplets (2nd member) 2nd
Solinas primes 5th
Thabit primes of the 2nd kind 2nd
Twin primes (2nd member) 3rd
Ulam primes 4th
Wilson primes 2nd
Roman numberalsVIIIXIII
Base 21000211012
Base 32231113
Base 4204314
Base 5135235
Base 6126216
Base 7117167
Base 8108158
Base 989149
Base 108101310
Base 118111211
Base 128121112
Base 138131013
Base 14814d14
Base 15815d15
Base 16816d16
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