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What is the Greatest Common Factor of 34 and 68?

Greatest common factor (GCF) of 34 and 68 is 34.

GCF(34,68) = 34

We will now calculate the prime factors of 34 and 68, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 34 and 68.

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How to find the GCF of 34 and 68?

We will first find the prime factorization of 34 and 68. After we will calculate the factors of 34 and 68 and find the biggest common factor number .

Step-1: Prime Factorization of 34

Prime factors of 34 are 2, 17. Prime factorization of 34 in exponential form is:

34 = 21 × 171

Step-2: Prime Factorization of 68

Prime factors of 68 are 2, 17. Prime factorization of 68 in exponential form is:

68 = 22 × 171

Step-3: Factors of 34

List of positive integer factors of 34 that divides 34 without a remainder.

1, 2, 17

Step-4: Factors of 68

List of positive integer factors of 68 that divides 34 without a remainder.

1, 2, 4, 17, 34

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 34 and 68. The biggest common factor number is the GCF number.
So the greatest common factor 34 and 68 is 34.

Also check out the Least Common Multiple of 34 and 68