GCF for 34 and 72

What is the Greatest common Divisor of 34 and 72?

Answer: GCF of 34 and 72 is 2

(Two)

Finding GCF for 34 and 72 using all factors (divisors) listing

The first method to find GCF for numbers 34 and 72 is to list all factors for both numbers and pick the highest common one:

All factors of 34: 1, 2, 17, 34

All factors of 72: 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72

So the Greatest Common Factor for 34 and 72 is 2

Finding GCF for 34 and 72 by Prime Factorization

The second method to find GCF for numbers 34 and 72 is to list all Prime Factors for both numbers and multiply the common ones:

All Prime Factors of 34: 2, 17

All Prime Factors of 72: 2, 2, 2, 3, 3

As we can see there is only one Prime Factor common to both numbers. It is 2

So 2 is the Greatest Common Factor of 34 and 72

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About "Greatest Common Factor" Calculator

This calculator will help you find the greatest common factor (GCF) of two numbers. For example, it can help you find out what is the Greatest common Divisor of 34 and 72? (The answer is: 2). Select the first number (e.g. '34') and the second number (e.g. '72'). After that hit the 'Calculate' button.
Greatest Common Factor (GCF) also known as the Greatest Common Divisor (GCD) or Highest Common Factor (HCF) - it is the largest positive integer that divides each of the integers with zero remainder

GCF Table

Number 1Number 2GCF
19721
20724
21723
22722
23721
2472
25721
26722
2772
2872
29721
3072
31721
3272
33723
3472
3572
3672
3772
38722
39723
4072
41721
4272
43721
44724
4572
46722
47721
4872

FAQ

What is the Greatest common Divisor of 34 and 72?

GCF of 34 and 72 is 2