1
5-5
3-15
1
3-3
3-9
2-18
1
3-3
2-6
2-12
2-24
3 x 5 = 15
2 x 3 x 3 = 18
2 x 2 x 2 x 3 = 24
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The prime factorization of 18 is 2 x 3 x 3. The prime factorization of 56 is 2 x 2 x 2 x7.
its 36
2 x 32 = 18
18 = 2 x 3 x 3
The GCF of 16, 18 and 27 is 1. The prime factorization of 16 is 2*2*2*2 The prime factorization of 18 is 2*3*3 The prime factorization of 27 is 3*3*3 The numbers have no common factors except 1, so that is their GCF.