Is the distribution of almost-primes known.

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

    If we define the "Almost-primes" as:

    * [tex] p^{a} [/tex] 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
     
  2. jcsd
  3. matt grime

    matt grime 9,396
    Science Advisor
    Homework Helper

    Yes. But yo don't want to ask that. You want to ask if there is a way to express this function in terms of easily computed objects/quantities, or if there is a closed expression in n. Can't help you there.
     
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