What is the Greatest Common Factor of 77561 and 77581?

Greatest common factor (GCF) of 77561 and 77581 is 1.

GCF(77561,77581) = 1

We will now calculate the prime factors of 77561 and 77581, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 77561 and 77581.

How to find the GCF of 77561 and 77581?

We will first find the prime factorization of 77561 and 77581. After we will calculate the factors of 77561 and 77581 and find the biggest common factor number .

Step-1: Prime Factorization of 77561

Prime factors of 77561 are 11, 641. Prime factorization of 77561 in exponential form is:

77561 = 11² × 641¹

Step-2: Prime Factorization of 77581

Prime factors of 77581 are 7, 11083. Prime factorization of 77581 in exponential form is:

77581 = 7¹ × 11083¹

Step-3: Factors of 77561

List of positive integer factors of 77561 that divides 77561 without a remainder.

1, 11, 121, 641, 7051

Step-4: Factors of 77581

List of positive integer factors of 77581 that divides 77561 without a remainder.

1, 7, 11083

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 77561 and 77581. The biggest common factor number is the GCF number.
So the greatest common factor 77561 and 77581 is 1.

Also check out the Least Common Multiple of 77561 and 77581