Compare 6 vs 13

Unique factors21
Total factors21
Prime factorization21 × 31131
Prime factorization2 × 313
Divisors count42
Divisors1, 2, 3, 61, 13
Number of properties132
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 numberalsVIXIII
Base 2110211012
Base 32031113
Base 4124314
Base 5115235
Base 6106216
Base 767167
Base 868158
Base 969149
Base 106101310
Base 116111211
Base 126121112
Base 136131013
Base 14614d14
Base 15615d15
Base 16616d16
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