# Is the distribution of almost-primes known.

tpm
Is the distribution of "almost-primes" known.

If we define the "Almost-primes" as:

* $$p^{a}$$ a is positive integer and p is a prime

* pq where p and q are both primes

then my question is if their distribution known ?? i mean if there is a function f(x) so for f(N) gives the values of "almost prime numbers" from 1 to N