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The GCF of a group of prime numbers is always 1.

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11y ago
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8y ago

Since they are all prime numbers - the GCF is 1.

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Q: What is the greatest common factor of 7 3 and 5?
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What is the greatest common factor of 3 5 28?

The greatest common factor of 3 , 5 , 28 = 1


What is the greatest common factor of 3 5 and 12?

The greatest common factor of 3, 5, and 12 is 1.


What is the greatest common factor of 3 5 and 15?

The Greatest Common Factor (GCF) is: 1


How do you find the greatest common factor of 3 and 5?

The only factor they have in common is 1. It has to be the greatest.


What is the greatest common factor of 18 and 75?

The greatest Common Factor (GCF) of 18 and 75 is 3.


How do you find the greatest common factor of 45 using prime factorization?

You do not. To have a greatest common factor, you need two or more numbers. A common factor is a factor that two or more number have in common. However, the prime factorization of all the numbers will help you find the greatest common factor. The greatest common factor will be the prime factors they have in common multiplied together. Example: The prime factors of 45 are 3, 3, and 5. The prime factors of 60 are 2, 2, 3, and 5. The common prime factors are 3 and 5, so the greatest common factor is 3 x 5 = 15.


What is the greatest common factor for 25 35 and 45?

25 = 5*5 35 = 5*7 45 = 3*3*5 So the greatest common factor is 5.


What is a factor tree of the greatest common factor of 225?

225 15 15 3 5 3 5 The factors of 225 are 3, 3, 5, and 5. A common factor is one common to each of two or more numbers. There is not greatest common factor when only one number is given.


What is the greatest common factor for 3 5 and 7?

The greatest common denominator is infinite.


What are the greatest common factor and least common multiple of 3 and 5?

The LCM or least common multiple of 3 and 5 is 15.The GCF or greatest common factor of 3 and 5 is 1.


What is the greatest common factor of 15 and 75?

Since 15 is a factor of 75, and 15 is its own largest factor, the greatest common factor must be 15.Another way to determine the greatest common factor is to find all the factors of the numbers and compare them.The factors of 15 are 1, 3, 5, and 15.The factors of 75 are 1, 3, 5, 15, 25, and 75.The common factors are 1, 3, 5, and 15. Therefore, the greatest common factor is 15.The greatest common factor can also be calculated by identifying the common prime factors and multiplying them together.The prime factors of 15 are 3 and 5.The prime factors of 75 are 3, 5, and 5.The prime factors in common are 3 and 5, so the greatest common factor is 3 x 5 = 15.It is 15


What is the greatest common factor of 15 65?

15 = 3 x 5 65 = 5 x 13 So the greatest common factor is 5