What is the Greatest Common Factor of 42138 and 42146?

Greatest common factor (GCF) of 42138 and 42146 is 2.

GCF(42138,42146) = 2

We will now calculate the prime factors of 42138 and 42146, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 42138 and 42146.

How to find the GCF of 42138 and 42146?

We will first find the prime factorization of 42138 and 42146. After we will calculate the factors of 42138 and 42146 and find the biggest common factor number .

Step-1: Prime Factorization of 42138

Prime factors of 42138 are 2, 3, 2341. Prime factorization of 42138 in exponential form is:

42138 = 2¹ × 3² × 2341¹

Step-2: Prime Factorization of 42146

Prime factors of 42146 are 2, 13, 1621. Prime factorization of 42146 in exponential form is:

42146 = 2¹ × 13¹ × 1621¹

Step-3: Factors of 42138

List of positive integer factors of 42138 that divides 42138 without a remainder.

1, 2, 3, 6, 9, 18, 2341, 4682, 7023, 14046, 21069

Step-4: Factors of 42146

List of positive integer factors of 42146 that divides 42138 without a remainder.

1, 2, 13, 26, 1621, 3242, 21073

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 42138 and 42146. The biggest common factor number is the GCF number.
So the greatest common factor 42138 and 42146 is 2.

Also check out the Least Common Multiple of 42138 and 42146