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Greatest common factor of 51 and 21?

Anonymous

∙ 8y ago

Updated: 4/28/2022

GCF of 21 and 51 is 3.
21=3*7
51=3*17

Wiki User

∙ 15y ago

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More answers

Prime Factors

21 = 3 * 7

51 = 3 * 17

Highest Common Factor (HCF) = 3

Least Common Multiple (LCM) = 357

Wiki User

∙ 14y ago

The GCF is 3.

Wiki User

∙ 8y ago

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Continue Learning about Basic Math

What is the greatest common factor of 21 and 51?

The GCF of 21 and 51 is 3. Both these numbers have only one prime factorization. 21=3*7 51=3*17 So the greatest common divisor is 3.

What is the greatest common factor of 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 of 39 48 and 51?

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

What is the greatest common factor of 34 and 51?

Greatest common factor of 51 and 34 is 17.

What is a greatest common factor of 17 and 51?

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

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