Best Answer

The greatest common factor of 18 and 51 is 3.

18 ÷ 3 = 6

51 ÷ 3 = 17

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

The factors of 18 are 1, 2, 3, 6, 9, and 18.

The factors of 51 are 1, 3, 17, and 51.

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

The greatest common factor can also be calculated by identifying the common prime factors and multiplying them together.

The prime factors of 18 are 2, 3, and 3.

The prime factors of 51 are 3 and 17.

The prime factors in common are a single 3, so the greatest common factor is 3.

The greatest common factor of 51 and 18 is 3

Q: What is the greatest common factor of 18 and 51?

Write your answer...

Submit

Still have questions?

Continue Learning about Basic Math

There is not a greatest common factor of 51 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 factors of 51 are 1, 3, 17, and 51.Examples:The greatest common factor of 34 and 51 is 17.The greatest common factor of 51 and 90 is 3.The greatest common factor of 5 and 51 is 1.You need at least two numbers to find a GCF.

The Greatest Common Factor of 39, 48, 51: 3

Greatest common factor of 51 and 34 is 17.

17 is the greatest common factor - it goes into 17 once, and 51 three times.

3 is a factor of 51, and 3 is also the largest factor of itself, so 3 is the greatest common factor. The factors of 3 are 1 and 3. The factors of 51 are 1, 3, 17, and 51. The common factors are 1 and 3. Therefore, the greatest common factor is 3. The greatest common factor can also be calculated by identifying the common prime factors and multiplying them together. The prime factor of 3 is 3. The prime factors of 51 are 3 and 17. The common prime factors are a single 3, so the greatest common factor is 3.

Related questions

The greatest common fator of 51 abd 18 is 3.

The GCF is 3.

The Greatest Common Factor of 51 and 34 is 17.

The greatest common factor of 62 and 51 is 1.

The greatest common factor of 51 , 35 = 1

The greatest common factor is 51

There is not a greatest common factor of 51 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 factors of 51 are 1, 3, 17, and 51.Examples:The greatest common factor of 34 and 51 is 17.The greatest common factor of 51 and 90 is 3.The greatest common factor of 5 and 51 is 1.You need at least two numbers to find a GCF.

What is the greatest common factor shared by 51 and 21?

The Greatest Common Factor of 39, 48, 51: 3

Greatest common factor of 51 and 125 is 1.

The Greatest Common Factor (GCF) is: 1

Greatest common factor of 51 and 34 is 17.