What is the GCF of 663 and 1620?
The GCF of 663 and 1620 is 3.
Steps to find GCF
- Find the prime factorization of 663
663 = 3 × 13 × 17 - Find the prime factorization of 1620
1620 = 2 × 2 × 3 × 3 × 3 × 3 × 5 - To find the GCF, multiply all the prime factors common to both numbers:
Therefore, GCF = 3
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Find HCF of: 1326 & 3240 1989 & 4860 221 & 540 3315 & 8100 1326 & 1620 663 & 3240 1989 & 1620 663 & 4860 3315 & 1620 663 & 8100 4641 & 1620
GCF Calculator
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The greatest common factor (GCF) is also known as greatest common divisor (GCD) or highest common factor (HCF).