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What is the greatest common factor of 3, 9 and 11?

You have reached us maybe looking for answers to the questions like: What is the greatest common factor of 3, 9 and 11? or what is the highest common factor (HCF) of 3, 9 and 11?

What is the GCF of 3, 9 and 11?

The first step to find the gcf of 3, 9 and 11 is to list the factors of each number. The factors of 3 are 1 and 3. The factors of 9 are 1, 3 and 9. The factors of 11 are 1 and 11. So, the Greatest Common Factor for these numbers is 1 because it divides all them without a remainder. Read more about Common Factors below.

To use the GCD / GCF / HCF Calculator below just enter a set of numbers separated by commas (,).

GCF Calculator

Enter values separeted by commas:
 Ex.: 2,4,8; 3,6 etc.

Short Answer:
Result here
Detailed Answer:
Greatest Common Divisor explained here

How to find the Greatest Common Factor

GCF example:

The first step is to find all divisors of each number. For instance, let us find the gcf(3,9,11).

In this case we have:

  • The factors of 3 (all the whole numbers that can divide the number without a remainder) are 1 and 3;
  • The factors of 9 are 1, 3 and 9;
  • The factors of 11 are 1 and 11.

The second step is to analyze which are the common divisors. It is not difficult to see that the 'Greatest Common Factor' or 'Divisor' for 3, 9 and 11 is 1. The GCF is the largest common positive integer that divides all the numbers (3,9,11) without a remainder.

The GCF is also known as:

  • Greatest common divisor (gcd);
  • Highest common factor (hcf);
  • Greatest common measure (gcm), or
  • Highest common divisor

To learn more about GCF/GCD, watch this video from Khan Academy or/and read this arcticle.

Greatest Common Factor Calculator

Greatest Common Factor Calculator

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