81 = 3 x 3 x 3 x 3
51 = 3 x 17
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51 = 3 x 17
The prime factorization of 81 is 3 * 3 * 3 * 3 or 3^4 The prime factorization for 81 is 3 times 3 times 3 times 3
20 = 22 x 51
The GCF of 6 and 51 is 3. The prime factorization of 6 is 2*3 The prime factorization of 51 is 3*17 So the GCF is 3.
Prime FACTORIZATION of 81: 3^4