Project Euler #187: Semiprimes

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    Can sum1 explain me how the sample out put answer is 1 for the input of 5. ? condition of N is shd strt from 5 and input value itself 5 so only one value ie 5.

    so how 5 value contains 2 prime factors ? if(1 and 5) then all the provided example input was wrong isnt it ?

    Thanks in advance