What is the Greatest Common Factor of 20315 and 20321?

Greatest common factor (GCF) of 20315 and 20321 is 1.

GCF(20315,20321) = 1

We will now calculate the prime factors of 20315 and 20321, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 20315 and 20321.

How to find the GCF of 20315 and 20321?

We will first find the prime factorization of 20315 and 20321. After we will calculate the factors of 20315 and 20321 and find the biggest common factor number .

Step-1: Prime Factorization of 20315

Prime factors of 20315 are 5, 17, 239. Prime factorization of 20315 in exponential form is:

20315 = 5¹ × 17¹ × 239¹

Step-2: Prime Factorization of 20321

Prime factors of 20321 are 7, 2903. Prime factorization of 20321 in exponential form is:

20321 = 7¹ × 2903¹

Step-3: Factors of 20315

List of positive integer factors of 20315 that divides 20315 without a remainder.

1, 5, 17, 85, 239, 1195, 4063

Step-4: Factors of 20321

List of positive integer factors of 20321 that divides 20315 without a remainder.

1, 7, 2903

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 20315 and 20321. The biggest common factor number is the GCF number.
So the greatest common factor 20315 and 20321 is 1.

Also check out the Least Common Multiple of 20315 and 20321