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Start with the lowest prime factors 2, 3, 5, 7 etc and work up.

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Q: How do you find the greatest prime factor for a given number?
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Can the greatest common factor of two numbers be prime?

Yes. The greatest common factor of 4 and 10 is 2, which is a prime number. The greatest common factor of 51 and 81 is 3, which is a prime number.


What is the second greatest factor of any number and how does this relate to the greastest factor of any number?

The greatest factor of any number is the number itself. The second greatest factor of any even number is half the number. The second greatest factor of any composite number is the number divided by its smallest prime factor. The second greatest factor of any prime number is 1.


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That doesn't really exist. A factor tree is a way to notate the process of finding the prime factorization of a given number. The greatest common factor, or GCF, is the largest number that can divide evenly with no remainder into a given set of numbers.


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If you mean the greatest prime factor of 210 it is 7.


What is the greatest prime factor of the number 1230?

13 is the largest prime factor of 3120.


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What is the greatest common factor through prime number 64?

This is a question that cannot be answered. First, 64 is not a prime number. Second, the greatest common factor is the factor that two or more numbers have in common. There is no greatest common factor of a single number, such as 64.


What is the greatest common factor of 5 and 121?

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