What is the Greatest Common Factor of 2158 and 2178?

Greatest common factor (GCF) of 2158 and 2178 is 2.

GCF(2158,2178) = 2

We will now calculate the prime factors of 2158 and 2178, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 2158 and 2178.

How to find the GCF of 2158 and 2178?

We will first find the prime factorization of 2158 and 2178. After we will calculate the factors of 2158 and 2178 and find the biggest common factor number .

Step-1: Prime Factorization of 2158

Prime factors of 2158 are 2, 13, 83. Prime factorization of 2158 in exponential form is:

2158 = 2¹ × 13¹ × 83¹

Step-2: Prime Factorization of 2178

Prime factors of 2178 are 2, 3, 11. Prime factorization of 2178 in exponential form is:

2178 = 2¹ × 3² × 11²

Step-3: Factors of 2158

List of positive integer factors of 2158 that divides 2158 without a remainder.

1, 2, 13, 26, 83, 166, 1079

Step-4: Factors of 2178

List of positive integer factors of 2178 that divides 2158 without a remainder.

1, 2, 3, 6, 9, 11, 18, 22, 33, 66, 99, 121, 198, 242, 363, 726, 1089

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 2158 and 2178. The biggest common factor number is the GCF number.
So the greatest common factor 2158 and 2178 is 2.

Also check out the Least Common Multiple of 2158 and 2178