What is the GCF of 25 and 66?
The GCF of 25 and 66 is 1.
Steps to find GCF
- Find the prime factorization of 25
25 = 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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Related
Find HCF of: 50 & 132 75 & 198 125 & 330 175 & 462 50 & 66 25 & 132 75 & 66 25 & 198 125 & 66 25 & 330 175 & 66 25 & 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).