1. Numbers
  2. Compare 51 vs 53

Compare 51 vs 53

Property5153
Typesemiprimeprime
Unique factors21
Total factors21
Prime factorization31 × 171531
Prime factorization3 × 1753
Divisors count42
Divisors1, 3, 17, 511, 53
Number of properties118
Chen primes 15th
Class 1+ primes 10th
Good primes 7th
Isolated primes 5th
Left-truncatable primes 11th
Pierpont primes of the 2nd kind 10th
Primes 16th
Pythagorean primes 7th
Restricted right-truncatable primes 1st
Right-truncatable primes 9th
Semiprimes18th 
Sexy primes (1st member) 11th
Sexy primes (2nd member) 10th
Sexy prime quadrupletss (3rd member) 3rd
Sexy prime triplets (2nd member) 7th
Sexy prime triplets (3rd member) 6th
Sophie germain primes 8th
Two-sided primes 7th
Ulam primes 6th
Roman numberalsLILIII
Base 211001121101012
Base 31220312223
Base 430343114
Base 520152035
Base 612361256
Base 710271047
Base 8638658
Base 9569589
Base 1051105310
Base 1147114911
Base 1243124512
Base 133c134113
Base 1439143b14
Base 1536153815
Base 1633163516
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