What is the Greatest Common Factor of 2156 and 2166?

Greatest common factor (GCF) of 2156 and 2166 is 2.

GCF(2156,2166) = 2

We will now calculate the prime factors of 2156 and 2166, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 2156 and 2166.

How to find the GCF of 2156 and 2166?

We will first find the prime factorization of 2156 and 2166. After we will calculate the factors of 2156 and 2166 and find the biggest common factor number .

Step-1: Prime Factorization of 2156

Prime factors of 2156 are 2, 7, 11. Prime factorization of 2156 in exponential form is:

2156 = 2² × 7² × 11¹

Step-2: Prime Factorization of 2166

Prime factors of 2166 are 2, 3, 19. Prime factorization of 2166 in exponential form is:

2166 = 2¹ × 3¹ × 19²

Step-3: Factors of 2156

List of positive integer factors of 2156 that divides 2156 without a remainder.

1, 2, 4, 7, 11, 14, 22, 28, 44, 49, 77, 98, 154, 196, 308, 539, 1078

Step-4: Factors of 2166

List of positive integer factors of 2166 that divides 2156 without a remainder.

1, 2, 3, 6, 19, 38, 57, 114, 361, 722, 1083

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 2156 and 2166. The biggest common factor number is the GCF number.
So the greatest common factor 2156 and 2166 is 2.

Also check out the Least Common Multiple of 2156 and 2166