As for rational numbers, ternary offers a convenient way to represent as same as senary (as opposed to its cumbersome representation as an infinite string of recurring digits in decimal); but a major drawback is that, in turn, ternary does not offer a finite representation for (nor for , , etc.), because 2 is not a prime factor of the base; as with base two, one-tenth (decimal, senary ) is not representable exactly (that would need e.g. decimal); nor is one-sixth (senary , decimal ).
As for rational numbers, ternary offers a convenient way to represent as same as senary (as opposed to its cumbersome representation as an infinite string of recurring digits in decimal); but a major drawback is that, in turn ternary does not offer a finite representation for (nor for  , etc.), because 2 is not a prime, factor of the base; as with base two, one-tenth (decimal, senary ) is not representable exactly (that would need e.g. decimal); nor is one-sixth (senary , decimal ).