Solutions by everydaycalculation.com

The GCF of 156 and 31 is 1.

- Find the prime factorization of 156

156 = 2 × 2 × 3 × 13 - Find the prime factorization of 31

31 = 31 - To find the GCF, multiply all the prime factors common to both numbers:

Therefore, GCF = 1

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Find hcf of: 312 & 62 468 & 93 780 & 155 1092 & 217 312 & 31 156 & 62 468 & 31 156 & 93 780 & 31 156 & 155 1092 & 31 156 & 217

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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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