What is the Greatest Common Factor of 33 and 66?

Greatest common factor (GCF) of 33 and 66 is 33.

GCF(33,66) = 33

We will now calculate the prime factors of 33 and 66, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 33 and 66.

How to find the GCF of 33 and 66?

We will first find the prime factorization of 33 and 66. After we will calculate the factors of 33 and 66 and find the biggest common factor number .

Step-1: Prime Factorization of 33

Prime factors of 33 are 3, 11. Prime factorization of 33 in exponential form is:

33 = 3¹ × 11¹

Step-2: Prime Factorization of 66

Prime factors of 66 are 2, 3, 11. Prime factorization of 66 in exponential form is:

66 = 2¹ × 3¹ × 11¹

Step-3: Factors of 33

List of positive integer factors of 33 that divides 33 without a remainder.

1, 3, 11

Step-4: Factors of 66

List of positive integer factors of 66 that divides 33 without a remainder.

1, 2, 3, 6, 11, 22, 33

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 33 and 66. The biggest common factor number is the GCF number.
So the greatest common factor 33 and 66 is 33.

Also check out the Least Common Multiple of 33 and 66