2 x 2 x 3 x 7 = 84
2 x 2 x 3 x 3 x 7 = 252
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The GCF of 35, 63, and 84 is 7. The prime factorization of 35 is 5*7. The prime factorization of 63 is 3*3*7 The prime factorization of 84 is 2*2*3*7 The GCF of 35, 63, and 84 is thus 7.
The largest prime factor is 7.
2 x 2 x 3 x 7 makes it composite.
least common multiple of 63 and 84 is 252.
The prime factorization of 42 does not use exponents: 2 x 3 x 7