Solutions by everydaycalculation.com

The GCF of 63 and 9975 is 21.

- Find the prime factorization of 63

63 = 3 × 3 × 7 - Find the prime factorization of 9975

9975 = 3 × 5 × 5 × 7 × 19 - To find the GCF, multiply all the prime factors common to both numbers:

Therefore, GCF = 3 × 7 - GCF =
**21**

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Find hcf of: 21 & 3325 9 & 1425 126 & 9975 189 & 9975 315 & 9975 441 & 9975

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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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