%N Smallest number whose unsorted prime signature is the reversed unsorted prime signature of n.
%C Unsorted prime signature (A124010) is the sequence of exponents in a number's prime factorization.
%e The prime signature of 12345678 = 2*3*3*47*14593 is (1,2,1,1), and the least number with prime signature (1,1,2,1) is 1050 = 2*3*5*5*7, so a(12345678) = 1050.
%Y The range is A055932.
%Y The non-reversed version is A071364.
%Y Unsorted prime signature is A124010.
%Y Numbers whose prime signature is aperiodic are A329139.
%Y Cf. A056239, A112798, A233249, A333217, A333219, A334032, A334033.
%A _Gus Wiseman_, Apr 18 2020