Solutions by everydaycalculation.com

The GCF of 105 and 800 is 5.

- Find the prime factorization of 105

105 = 3 × 5 × 7 - Find the prime factorization of 800

800 = 2 × 2 × 2 × 2 × 2 × 5 × 5 - To find the GCF, multiply all the prime factors common to both numbers:

Therefore, GCF = 5

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Find hcf of: 210 & 1600 315 & 2400 525 & 4000 21 & 160 735 & 5600 210 & 800 105 & 1600 315 & 800 105 & 2400 525 & 800 105 & 4000 735 & 800 105 & 5600

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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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