What is the GCF of 9 and 23?
The GCF of 9 and 23 is 1.
Steps to find GCF
- Find the prime factorization of 9
9 = 3 × 3 - Find the prime factorization of 23
23 = 23 - 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: 18 & 46 27 & 69 45 & 115 63 & 161 18 & 23 9 & 46 27 & 23 9 & 69 45 & 23 9 & 115 63 & 23 9 & 161
GCF Calculator
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The greatest common factor (GCF) is also known as greatest common divisor (GCD) or highest common factor (HCF).