Solutions by everydaycalculation.com

The GCF of 70 and 23 is 1.

- Find the prime factorization of 70

70 = 2 × 5 × 7 - Find the prime factorization of 23

23 = 23 - To find the GCF, multiply all the prime factors common to both numbers:

Therefore, GCF = 1

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Find hcf of: 140 & 46 210 & 69 350 & 115 490 & 161 140 & 23 70 & 46 210 & 23 70 & 69 350 & 23 70 & 115 490 & 23 70 & 161

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The greatest common factor (GCF) is also known as greatest common divisor (GCD) or highest common factor (HCF).

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