What is the Greatest Common Factor of 42020 and 42038?

Greatest common factor (GCF) of 42020 and 42038 is 2.

GCF(42020,42038) = 2

We will now calculate the prime factors of 42020 and 42038, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 42020 and 42038.

How to find the GCF of 42020 and 42038?

We will first find the prime factorization of 42020 and 42038. After we will calculate the factors of 42020 and 42038 and find the biggest common factor number .

Step-1: Prime Factorization of 42020

Prime factors of 42020 are 2, 5, 11, 191. Prime factorization of 42020 in exponential form is:

42020 = 2² × 5¹ × 11¹ × 191¹

Step-2: Prime Factorization of 42038

Prime factors of 42038 are 2, 21019. Prime factorization of 42038 in exponential form is:

42038 = 2¹ × 21019¹

Step-3: Factors of 42020

List of positive integer factors of 42020 that divides 42020 without a remainder.

1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 191, 220, 382, 764, 955, 1910, 2101, 3820, 4202, 8404, 10505, 21010

Step-4: Factors of 42038

List of positive integer factors of 42038 that divides 42020 without a remainder.

1, 2, 21019

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 42020 and 42038. The biggest common factor number is the GCF number.
So the greatest common factor 42020 and 42038 is 2.

Also check out the Least Common Multiple of 42020 and 42038