What is the Greatest Common Factor of 42478 and 42489?

Greatest common factor (GCF) of 42478 and 42489 is 1.

GCF(42478,42489) = 1

We will now calculate the prime factors of 42478 and 42489, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 42478 and 42489.

How to find the GCF of 42478 and 42489?

We will first find the prime factorization of 42478 and 42489. After we will calculate the factors of 42478 and 42489 and find the biggest common factor number .

Step-1: Prime Factorization of 42478

Prime factors of 42478 are 2, 67, 317. Prime factorization of 42478 in exponential form is:

42478 = 2¹ × 67¹ × 317¹

Step-2: Prime Factorization of 42489

Prime factors of 42489 are 3, 4721. Prime factorization of 42489 in exponential form is:

42489 = 3² × 4721¹

Step-3: Factors of 42478

List of positive integer factors of 42478 that divides 42478 without a remainder.

1, 2, 67, 134, 317, 634, 21239

Step-4: Factors of 42489

List of positive integer factors of 42489 that divides 42478 without a remainder.

1, 3, 9, 4721, 14163

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 42478 and 42489. The biggest common factor number is the GCF number.
So the greatest common factor 42478 and 42489 is 1.

Also check out the Least Common Multiple of 42478 and 42489