Compare 28 vs 53

Typecomposite numberprime
Unique factors21
Total factors31
Prime factorization22 × 71531
Prime factorization2 × 2 × 753
Divisors count62
Divisors1, 2, 4, 7, 14, 281, 53
Number of properties018
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
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 numberalsXXVIIILIII
Base 21110021101012
Base 31001312223
Base 413043114
Base 510352035
Base 64461256
Base 74071047
Base 8348658
Base 9319589
Base 1028105310
Base 1126114911
Base 1224124512
Base 1322134113
Base 1420143b14
Base 151d153815
Base 161c163516
This website uses cookies to ensure you get the best experience on our website. More info