Compare 27 vs 31

Typecomposite numberprime
Unique factors11
Total factors31
Prime factorization33311
Prime factorization3 × 3 × 331
Divisors count42
Divisors1, 3, 9, 271, 31
Number of properties018
Centered decagonal primes 2nd
Centered triangular primes 2nd
Chen primes 11th
Class 1+ primes 8th
Emirps 3rd
Euclid primes 4th
Happy primes 5th
Lucky primes 4th
Mersenne primes 3rd
Multiplicative primes 7th
Pierpont primes of the 2nd kind 8th
Primes 11th
Right-truncatable primes 7th
Sexy primes (1st member) 7th
Sexy prime triplets (1st member) 5th
Solinas primes 10th
Super primes 5th
Twin primes (2nd member) 5th
Roman numberalsXXVIIXXXI
Base 2110112111112
Base 31000310113
Base 412341334
Base 510251115
Base 6436516
Base 7367437
Base 8338378
Base 9309349
Base 1027103110
Base 1125112911
Base 1223122712
Base 1321132513
Base 141d142314
Base 151c152115
Base 161b161f16
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