Answer
composite 3*3*3*3
Work Step by Step
Begin by selecting any two numbers, excluding 1 and 81, whose product is 81. Here is one possibility:
81 = 9*9
Because the factor 9 is not prime,
81 = 9*9 This is our first factorization.
81 = 3*3*3*3 Factor 9 .
Notice that 3 is prime. The prime factorization of 81 is 3*3*3*3
