If the number is a multiple of two h-primes, then it can't be a multiple of more than two h-primes, right? So what you can do is to generate the semi-primes out of the h-primes.sazzadcsedu wrote:how to determine a particular number is only multiple of 2 number!!!
plz some give me some idea;
i remove number containing more than 2-(5,9,13,17.....)
but cant handle case like:-5*117=(5*9*17).
how to handle them?????
![:)](./images/smilies/icon_smile.gif)