What is the Greatest Common Factor of 42438 and 42442?

Greatest common factor (GCF) of 42438 and 42442 is 2.

GCF(42438,42442) = 2

We will now calculate the prime factors of 42438 and 42442, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 42438 and 42442.

How to find the GCF of 42438 and 42442?

We will first find the prime factorization of 42438 and 42442. After we will calculate the factors of 42438 and 42442 and find the biggest common factor number .

Step-1: Prime Factorization of 42438

Prime factors of 42438 are 2, 3, 11, 643. Prime factorization of 42438 in exponential form is:

42438 = 2¹ × 3¹ × 11¹ × 643¹

Step-2: Prime Factorization of 42442

Prime factors of 42442 are 2, 21221. Prime factorization of 42442 in exponential form is:

42442 = 2¹ × 21221¹

Step-3: Factors of 42438

List of positive integer factors of 42438 that divides 42438 without a remainder.

1, 2, 3, 6, 11, 22, 33, 66, 643, 1286, 1929, 3858, 7073, 14146, 21219

Step-4: Factors of 42442

List of positive integer factors of 42442 that divides 42438 without a remainder.

1, 2, 21221

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 42438 and 42442. The biggest common factor number is the GCF number.
So the greatest common factor 42438 and 42442 is 2.

Also check out the Least Common Multiple of 42438 and 42442