What is the Greatest Common Factor of 42170 and 42185?

Greatest common factor (GCF) of 42170 and 42185 is 5.

GCF(42170,42185) = 5

We will now calculate the prime factors of 42170 and 42185, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 42170 and 42185.

How to find the GCF of 42170 and 42185?

We will first find the prime factorization of 42170 and 42185. After we will calculate the factors of 42170 and 42185 and find the biggest common factor number .

Step-1: Prime Factorization of 42170

Prime factors of 42170 are 2, 5, 4217. Prime factorization of 42170 in exponential form is:

42170 = 2¹ × 5¹ × 4217¹

Step-2: Prime Factorization of 42185

Prime factors of 42185 are 5, 11, 13, 59. Prime factorization of 42185 in exponential form is:

42185 = 5¹ × 11¹ × 13¹ × 59¹

Step-3: Factors of 42170

List of positive integer factors of 42170 that divides 42170 without a remainder.

1, 2, 5, 10, 4217, 8434, 21085

Step-4: Factors of 42185

List of positive integer factors of 42185 that divides 42170 without a remainder.

1, 5, 11, 13, 55, 59, 65, 143, 295, 649, 715, 767, 3245, 3835, 8437

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 42170 and 42185. The biggest common factor number is the GCF number.
So the greatest common factor 42170 and 42185 is 5.

Also check out the Least Common Multiple of 42170 and 42185