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Expressing each number as the product of prime numbers can help in taking out common factors.

Prime factorization of 56 = 2x2x2x7

Prime factorization of 160 = 2x2x2x2x2x5

2x2x2 is common in P.F. of both numbers. So, highest common factor is 2x2x2 = 8.

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13y ago
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Wiki User

9y ago

The GCF is 8.

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Q: What is the highest common factor of 56 and 160?
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