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The GCF is 1.

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Q: What are the greatest common factors of 45 and 56?
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What are the greatest common factors of 56 and 64?

The greatest common factor of 56 and 64 is 8


What is the greatest common factor of 56 and 45?

Factors of 45: 1 3 5 9 15 45 Factors of 56 : 1 2 4 7 8 14 28 56 The GCF of 45 and 56 is 1 Another way to approach this is to look at the difference between 45 and 56, which is 11. The greatest common factor of two numbers cannot be larger than the difference between the two numbers. The greatest common factor of two numbers must also be a factor of the difference between the numbers. The difference, 11, is a prime number, so the greatest common factor must be either 11 or 1. Since the numbers are not evenly divisible by 11, the greatest common factor is 1.


Greatest common factors for 21 and 56?

The Greatest Common Factor (GCF) is: 7


What is the greatest common factor of 27 39 and 45?

56


What is the greatest common factor of 45 and 56's prime numbers?

3 x 3 x 5 = 45 2 x 2 x 2 x 7 = 56 Since 45 and 56 don't have any prime factors in common, the GCF is 1.


What is the GCF of45 and 56?

45=3x3x5 56=2x2x2x7 There are no common factors.


What are the greatest common factors of 56 and 96?

The GCF of 56 and 96 is 8.


Greatest common factors of 42 and 56?

The greatest common factor of 42 and 56 is 14.


What is the greatest common factor of 45 and 56 and are they relatively prime?

Since the GCF of 45 and 56 is 1, they are relatively prime.


What are the common factors of 32 56 and 72?

the common factors are 2,4,8 and the greatest common factor is 8


What is the greatest common factor of 56?

There is not a greatest common factor of 56 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 56 are 1, 2, 4, 7, 8, 14, 28, and 56.The prime factors of 56 are 2, 2, 2, and 7.Examples:The greatest common factor of 16 and 56 is 8.The greatest common factor of 44 and 56 is 4.The greatest common factor of 56 and 63 is 7.You need at least two numbers to find a GCF.


What is the greatest common factor of 30 45 56 99 135 and 165 using prime factors?

Factors of 30 are 1, 2, 3, 5, 6, 10, 15, and 30 Factors of 45 are 1, 3, 5, 9, 15, and 45 Factors of 56 are 1, 2, 4, 7, 8, 14, 28, and 56 Factors of 99 are 1, 3, 9 11, 33, and 99 Factors of 135 are 1, 3, 5, 9, 15, 27, 45, and 135 Factors of 165 are 1, 3, 5, 11, 15, 33, 55, and 165 There are no common factors, so the greatest common factor is 1. The greatest common factor can be calculated by identifying the common prime factors and multiplying them together. The prime factors of 30 are 2, 3, and 5. The prime factors of 45 are 3, 3, and 5. The prime factors of 56 are 2, 2, 2, and 7. The prime factors of 99 are 3, 3, and 11. The prime factors of 135 are 3, 3, 3, and 5. The prime factors of 165 are 3, 5, and 11. There are no prime factors in common, so the numbers are relatively prime, which means the greatest common factor is 1.