1
Prime factorization of:
56 = 2 * 2 * 2 * 7
75 = .................3 * 5 * 5
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GCF= 1 (56 and 75 don't have a common factor except 1)
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The greatest common factor of 56 and 81 is 1.
The Greatest Common Factor of 175 and 56 is 7.
The greatest common factor of 56 and 105 is 7.
The GCF is 8.
The GCF is 2.