What is the GCF of 5 and 66?
The GCF of 5 and 66 is 1.
Steps to find GCF
- Find the prime factorization of 5
5 = 5 - Find the prime factorization of 66
66 = 2 × 3 × 11 - To find the GCF, multiply all the prime factors common to both numbers:
Note that there are no common prime factors. - Therefore, GCF = 1 (since 1 is a factor of every number)
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Find HCF of: 10 & 132 15 & 198 25 & 330 35 & 462 10 & 66 5 & 132 15 & 66 5 & 198 25 & 66 5 & 330 35 & 66 5 & 462
GCF Calculator
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The greatest common factor (GCF) is also known as greatest common divisor (GCD) or highest common factor (HCF).