GCF for 39 and 9

"Greatest Common Factor" Calculator

Greatest Common Factor of

and

What is the Greatest common Divisor of 39 and 9?

Answer: GCF of 39 and 9 is 3

(Three)

Finding GCF for 39 and 9 using all factors (divisors) listing

The first method to find GCF for numbers 39 and 9 is to list all factors for both numbers and pick the highest common one:

All factors of 39: 1, 3, 13, 39

All factors of 9: 1, 3, 9

So the Greatest Common Factor for 39 and 9 is 3

Finding GCF for 39 and 9 by Prime Factorization

The second method to find GCF for numbers 39 and 9 is to list all Prime Factors for both numbers and multiply the common ones:

All Prime Factors of 39: 3, 13

All Prime Factors of 9: 3, 3

As we can see there is only one Prime Factor common to both numbers. It is 3

So 3 is the Greatest Common Factor of 39 and 9

Related Calculations

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 39 and 9? (The answer is: 3). Select the first number (e.g. '39') and the second number (e.g. '9'). 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

"Greatest Common Factor" Calculator

Greatest Common Factor of

and

GCF Table

Number 1Number 2GCF
2493
2591
2691
2799
2891
2991
3093
3191
3291
3393
3491
3591
3699
3791
3891
3993
4091
4191
4293
4391
4491
4599
4691
4791
4893
4991
5091
5193
5291
5391

FAQ

What is the Greatest common Divisor of 39 and 9?

GCF of 39 and 9 is 3

See Also