GCF for 3 and 39

What is the Greatest Common Factor of 3 and 39?

Answer: GCF of 3 and 39 is 3

(Three)

Finding GCF for 3 and 39 using all factors (divisors) listing

The first method to find GCF for numbers 3 and 39 is to list all factors for both numbers and pick the highest common one:

All factors of 3: 1, 3

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

So the Greatest Common Factor for 3 and 39 is 3

Finding GCF for 3 and 39 by Prime Factorization

The second method to find GCF for numbers 3 and 39 is to list all Prime Factors for both numbers and multiply the common ones:

All Prime Factors of 3: 3

All Prime Factors of 39: 3, 13

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 3 and 39

GCF Table

Number 1Number 2GCF
1391
2391
3393
4391
539
6393
7391
8391
939
10391
11391
12393
1339
14391
15393
1639
17391
1839
19391
20391
2139
22391
23391
2439
25391
2639
2739
28391
29391
30393

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

FAQ

What is the Greatest Common Factor of 3 and 39?

GCF of 3 and 39 is 3