To answer the question above, identify first the greatest common factor for the numerical coefficients. That is 3. Next, determine the GCF for the variables p^5 and p³. Thus, factoring the given leads to,
3p³ x (p² - 4)
The second factor is a difference of two squares. Further simplification of the expression leads to,
3p³ x (p + 2) x (p - 2)
Thus, the answer is p + 2.