Solutions by everydaycalculation.com

The gcf of 10 and 26 is 2.

- Find the prime factorization of 10

10 = 2 × 5 - Find the prime factorization of 26

26 = 2 × 13 - To find the gcf, multiply all the prime factors common to both numbers:

Therefore, GCF = 2

The greatest common factor (gcf) is also known as greatest common divisor (gcd) or highest common factor (hcf).

Find hcf of: 20 & 52 5 & 13 30 & 78 50 & 130 70 & 182 20 & 26 10 & 52 30 & 26 10 & 78 50 & 26 10 & 130 70 & 26 10 & 182

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