What is the Greatest Common Factor of 2178 and 2190?

Greatest common factor (GCF) of 2178 and 2190 is 6.

GCF(2178,2190) = 6

We will now calculate the prime factors of 2178 and 2190, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 2178 and 2190.

How to find the GCF of 2178 and 2190?

We will first find the prime factorization of 2178 and 2190. After we will calculate the factors of 2178 and 2190 and find the biggest common factor number .

Step-1: 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-2: Prime Factorization of 2190

Prime factors of 2190 are 2, 3, 5, 73. Prime factorization of 2190 in exponential form is:

2190 = 2¹ × 3¹ × 5¹ × 73¹

Step-3: Factors of 2178

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

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

Step-4: Factors of 2190

List of positive integer factors of 2190 that divides 2178 without a remainder.

1, 2, 3, 5, 6, 10, 15, 30, 73, 146, 219, 365, 438, 730, 1095

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 2178 and 2190. The biggest common factor number is the GCF number.
So the greatest common factor 2178 and 2190 is 6.

Also check out the Least Common Multiple of 2178 and 2190