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Pierre Charland
Member since Dec2205

Feb0108, 09:41 PM (EST) 

"pi(x) , pq(x) , (p,q both primes)"

I'm looking for info on the distribution of numbers of the form n=pq, where p and q are both primes. For number of the form n=p, where p is prime, we have the function pi(x) for the number of such n<=x. And it is know that pi(x)=x/ln(x) approximately. Is there a similar function for numbers which are the product of 2 primes? and a know approximation? Any reference or link would help. Thanks AlphaChapMtl 

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