Prime factorization of 27 = 3x3x3
Prime factorization of 49 = 7x7
From the prime factorizations it is clear that gcf is 1.
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The GCF is 7.
The GCF (Greatest Common Factor) of 49 and 343 is 49. Since 49 is a factor of 343, it is automatically the GCF.
The GCF is 1.
The GCF is 1.
The GCF of 27 and 81 is 27. And their LCM is 81.