What is the Greatest Common Factor of 42865 and 42885?

Greatest common factor (GCF) of 42865 and 42885 is 5.

GCF(42865,42885) = 5

We will now calculate the prime factors of 42865 and 42885, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 42865 and 42885.

How to find the GCF of 42865 and 42885?

We will first find the prime factorization of 42865 and 42885. After we will calculate the factors of 42865 and 42885 and find the biggest common factor number .

Step-1: Prime Factorization of 42865

Prime factors of 42865 are 5, 8573. Prime factorization of 42865 in exponential form is:

42865 = 5¹ × 8573¹

Step-2: Prime Factorization of 42885

Prime factors of 42885 are 3, 5, 953. Prime factorization of 42885 in exponential form is:

42885 = 3² × 5¹ × 953¹

Step-3: Factors of 42865

List of positive integer factors of 42865 that divides 42865 without a remainder.

1, 5, 8573

Step-4: Factors of 42885

List of positive integer factors of 42885 that divides 42865 without a remainder.

1, 3, 5, 9, 15, 45, 953, 2859, 4765, 8577, 14295

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 42865 and 42885. The biggest common factor number is the GCF number.
So the greatest common factor 42865 and 42885 is 5.

Also check out the Least Common Multiple of 42865 and 42885