How to Find the Greatest Common Factor
Factor each number completely into its prime numbers., Identify any common prime factors., Calculate: If there's only one prime common factor, then that's your common factor., To demonstrate this method, study this example.
Step-by-Step Guide
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Step 1: Factor each number completely into its prime numbers.
A prime number is number greater than 1 that has no factors but itself.
Examples of prime numbers include 5, 17, 97, and 331, to name just a few. , Pick out any prime numbers between the set that are the same.
There can be several common factors. , If there are multiple prime common factors, then multiply all the prime common factors together to get your greatest common factor. , -
Step 2: Identify any common prime factors.
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Step 3: Calculate: If there's only one prime common factor
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Step 4: then that's your common factor.
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Step 5: To demonstrate this method
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Step 6: study this example.
Detailed Guide
A prime number is number greater than 1 that has no factors but itself.
Examples of prime numbers include 5, 17, 97, and 331, to name just a few. , Pick out any prime numbers between the set that are the same.
There can be several common factors. , If there are multiple prime common factors, then multiply all the prime common factors together to get your greatest common factor. ,
About the Author
Kathryn Gray
Writer and educator with a focus on practical organization knowledge.
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