  Recently, I have defined the so called PDF's (prime distribution factors)
which govern the distribution of prime numbers of the type $p,p+a_i$ being all
primes up to some number $n$. It was shown that the PDF's are expressible in
terms of the basic PDF's which are defined as $a_i-a_j$ or $a_i$ being composed
of primes which are less or equal to the number of primes. For example, $p,p+2$
(twin primes), or $p,p+2,p+6$ being all primes (basic triplets). We give here a
conjecture for the number of basic prime PDF's in terms of Hardy-Littlewood
numbers, thus completing the determination of PDF's. These conjectures are
supported by extensive calculations.
