What is the Greatest Common Factor of 42290 and 42305?

Greatest common factor (GCF) of 42290 and 42305 is 5.

GCF(42290,42305) = 5

We will now calculate the prime factors of 42290 and 42305, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 42290 and 42305.

How to find the GCF of 42290 and 42305?

We will first find the prime factorization of 42290 and 42305. After we will calculate the factors of 42290 and 42305 and find the biggest common factor number .

Step-1: Prime Factorization of 42290

Prime factors of 42290 are 2, 5, 4229. Prime factorization of 42290 in exponential form is:

42290 = 2¹ × 5¹ × 4229¹

Step-2: Prime Factorization of 42305

Prime factors of 42305 are 5, 8461. Prime factorization of 42305 in exponential form is:

42305 = 5¹ × 8461¹

Step-3: Factors of 42290

List of positive integer factors of 42290 that divides 42290 without a remainder.

1, 2, 5, 10, 4229, 8458, 21145

Step-4: Factors of 42305

List of positive integer factors of 42305 that divides 42290 without a remainder.

1, 5, 8461

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 42290 and 42305. The biggest common factor number is the GCF number.
So the greatest common factor 42290 and 42305 is 5.

Also check out the Least Common Multiple of 42290 and 42305