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Those two numbers could be 18 and 36.

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Q: What is greatest common factor of two numbers is 18?
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What are the common factors of 207?

There cannot be a greatest common factor of just one number. To be common there need to be at least two numbers. If you find all the factors of two or more numbers, and you find some factors are the same ("common"), then the largest of those common factors is the Greatest Common Factor.


Common factors of 55?

There cannot be a greatest common factor of just one number. To be common there need to be at least two numbers. If you find all the factors of two or more numbers, and you find some factors are the same ("common"), then the largest of those common factors is the Greatest Common Factor.


What is a greater common factor?

A greatest common factor is the largest factor between two or more numbers. For example, the greatest common factor of 10 and 12 is 2. Because the factors of 10 are 1,2,5, and 10 and the factors of 12 are 1,2,3,4,6, and 12. Since 2 is the largest factor that they both share, it is the greatest common factor.


What is the greatest common factor of 25 and 42?

Answer: 1. One way to determine the greatest common factor is to find all the factors of the numbers and compare them.The factors of 25 are 1, 5, and 25.The factors of 42 are 1, 2, 3, 6, 7, 14, 21, and 42.The only common factor is 1. Therefore, the greatest common factor is 1, which means the numbers are relatively prime.The greatest common factor can also be calculated by identifying the common prime factors and multiplying them together.The prime factors of 25 are 5 and 5.The prime factors of 42 are 2, 3, and 7.There are no prime factors in common, so the numbers are relatively prime, which means the greatest common factor is 1.Another way to approach this is to look at the difference between 25 and 42, which is 17. The greatest common factor of two numbers cannot be larger than the difference between the two numbers and must be a factor of the difference between the numbers. Since 17 is a prime number, the greatest common factor must be either 1 or 17. Neither 25 nor 42 are divisible by 17, so the greatest common factor is 1. This is a useful shortcut if you notice that the difference between the two numbers is a prime number.


What is the greatest common factor that two numbers between 40 and 50 can have?

The greatest common factor that is possible for two numbers between 40 and 50 would be 10 if both 40 and 50 are allowed, since 50 - 40 = 10. If only the numbers from 41 to 49 are allowed, the difference is 8, so 8 would be the largest possible common factor, but neither 41 nor 49 are divisible by 8, so that situation does not exist. However, 42 and 49 are both divisible by 7, which is their greatest common factor.

Related questions

What is the greatest common factor for 28?

There cannot be a greatest common factor if there are not at least two numbers to compare. The greatest common factor is the largest factor that all the numbers have in common - the largest factor that they all share.


The greatest factor that two or more numbers have common is the greatest common factor or what?

The greatest factor that two or more numbers have in common is known as the greatest common factor, or GCF.


What two numbers have the greatest common factor of fourteen?

Two numbers that have the greatest common factor of 14 are 28 and 42.


What one number has the greatest common factor of 871?

Answer: None, it is impossible. No single number has a greatest common factor. A "common factor" is a factor that two or more numbers have in common. The "greatest common factor" is the largest factor that two or more numbers have in common.


The greatest factor that two or more numbers have in common is?

The Greatest Common Factor, or GCF.


What is the greatest common factor of 109?

you need two numbers to have a greatest common factor


Name two numbers that have a greatest common factor of 8?

Two Numbers That Have The Greatest Common Factor Of Eight Are: 16 and 56


What is the greatest common factor of two or more prime numbers?

The greatest common factor of two or more prime numbers is 1.


What is the greatest common factor for 12?

You need at least two numbers to find a GCF. There cannot be a greatest common factor if there are not at least two numbers to compare. The greatest common factor is the largest factor that all the numbers have in common - the largest factor that they all share.


What is the greatest common factor for 712?

There cannot be a greatest common factor if there are not at least two numbers to compare. The greatest common factor is the largest factor that all the numbers have in common - the largest factor that they all share.


What is the greatest common factor of 270?

There cannot be a greatest common factor if there are not at least two numbers to compare. The greatest common factor is the largest factor that all the numbers have in common - the largest factor that they all share.


Greatest common factor of 42?

There cannot be a greatest common factor if there are not at least two numbers to compare. The greatest common factor is the largest factor that all the numbers have in common - the largest factor that they all share.