2 x 3 x 3 x 3 = 54
2 x 3 x 3 x 5 = 90
2 x 3 x 3 = 18, the GCF
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No prime power exists since there are no duplicate prime numbers in the prime factorization.
The greatest common factor of 54 and 90 is 18.
Prime Factorization of 90The prime factorization of 90 is not 2 X 5 X 9 because 9 is not a prime number. It can be factored into 3 X 3, which are prime numbers, so the prime factorization of 90 is2 X 3 X 3 X 5.
As a product of its prime factors: 2*3*3*5 = 90
2 x 32 x 5 = 90