Is the distribution of "almost-primes" known.


by tpm
Tags: almostprimes, distribution
tpm
tpm is offline
#1
Apr6-07, 11:16 AM
P: 76
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
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matt grime
matt grime is offline
#2
Apr6-07, 12:29 PM
Sci Advisor
HW Helper
P: 9,398
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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