What is the Greatest Common Factor of 2420 and 2438?

Greatest common factor (GCF) of 2420 and 2438 is 2.

GCF(2420,2438) = 2

We will now calculate the prime factors of 2420 and 2438, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 2420 and 2438.

How to find the GCF of 2420 and 2438?

We will first find the prime factorization of 2420 and 2438. After we will calculate the factors of 2420 and 2438 and find the biggest common factor number .

Step-1: Prime Factorization of 2420

Prime factors of 2420 are 2, 5, 11. Prime factorization of 2420 in exponential form is:

2420 = 2² × 5¹ × 11²

Step-2: Prime Factorization of 2438

Prime factors of 2438 are 2, 23, 53. Prime factorization of 2438 in exponential form is:

2438 = 2¹ × 23¹ × 53¹

Step-3: Factors of 2420

List of positive integer factors of 2420 that divides 2420 without a remainder.

1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210

Step-4: Factors of 2438

List of positive integer factors of 2438 that divides 2420 without a remainder.

1, 2, 23, 46, 53, 106, 1219

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 2420 and 2438. The biggest common factor number is the GCF number.
So the greatest common factor 2420 and 2438 is 2.

Also check out the Least Common Multiple of 2420 and 2438