What is the GCF of 3969 and 987?
The GCF of 3969 and 987 is 21.
Steps to find GCF
- Find the prime factorization of 3969
3969 = 3 × 3 × 3 × 3 × 7 × 7 - Find the prime factorization of 987
987 = 3 × 7 × 47 - To find the GCF, multiply all the prime factors common to both numbers:
Therefore, GCF = 3 × 7 - GCF = 21
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GCF Calculator
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The greatest common factor (GCF) is also known as greatest common divisor (GCD) or highest common factor (HCF).