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# What is the greatest common factor of 45 and 69?

Updated: 4/28/2022

Wiki User

15y ago

Definition: A factor is a divisor - a number that will evenly divide into another number. The greatest common factor of two or more numbers is the largest factor that the numbers have in common.

Method:

One way to determine the common factors and greatest common factor is to find all the factors of the numbers and compare them.

The factors of 45 are 1, 3, 5, 9, 15, and 45.

The factors of 69 are 1, 3, 23, and 69.

The common factors are 1 and 3. Therefore, the greatest common factor is 3.

Wiki User

15y ago

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Q: What is the greatest common factor of 45 and 69?
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The GCF is 3.

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### What is the GCF of 45 51 69?

The greatest common factor of the numbers 45 and 63 is 9.

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### What is the greatest common factor of 69?

There is not a greatest common factor of a single number, such as 69, because there cannot be a greatest common factor without two or more numbers to compare. Common factors are factors that the numbers being compared have in common. The greatest common factor is the largest factor that all the numbers being compared have in common. The factors of 69 are 1, 3, 23, and 69. The prime factors of 69 are 3 and 23. The prime factorization of 69 is 3 x 23. Examples: The greatest common factor of 51 and 69 is 3. The greatest common factor of 32 and 69 is 1. The greatest common factor of 69 and 115 is 23. You need at least two numbers to find a GCF. If that's 6 and 9, the GCF is 3.