What is the Greatest Common Factor of 9561 and 9581?

Greatest common factor (GCF) of 9561 and 9581 is 1.

GCF(9561,9581) = 1

We will now calculate the prime factors of 9561 and 9581, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 9561 and 9581.

How to find the GCF of 9561 and 9581?

We will first find the prime factorization of 9561 and 9581. After we will calculate the factors of 9561 and 9581 and find the biggest common factor number .

Step-1: Prime Factorization of 9561

Prime factors of 9561 are 3, 3187. Prime factorization of 9561 in exponential form is:

9561 = 3¹ × 3187¹

Step-2: Prime Factorization of 9581

Prime factors of 9581 are 11, 13, 67. Prime factorization of 9581 in exponential form is:

9581 = 11¹ × 13¹ × 67¹

Step-3: Factors of 9561

List of positive integer factors of 9561 that divides 9561 without a remainder.

1, 3, 3187

Step-4: Factors of 9581

List of positive integer factors of 9581 that divides 9561 without a remainder.

1, 11, 13, 67, 143, 737, 871

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 9561 and 9581. The biggest common factor number is the GCF number.
So the greatest common factor 9561 and 9581 is 1.

Also check out the Least Common Multiple of 9561 and 9581