What is the Greatest Common Factor of 77553 and 77561?

Greatest common factor (GCF) of 77553 and 77561 is 1.

GCF(77553,77561) = 1

We will now calculate the prime factors of 77553 and 77561, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 77553 and 77561.

How to find the GCF of 77553 and 77561?

We will first find the prime factorization of 77553 and 77561. After we will calculate the factors of 77553 and 77561 and find the biggest common factor number .

Step-1: Prime Factorization of 77553

Prime factors of 77553 are 3, 7, 1231. Prime factorization of 77553 in exponential form is:

77553 = 3² × 7¹ × 1231¹

Step-2: Prime Factorization of 77561

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

77561 = 11² × 641¹

Step-3: Factors of 77553

List of positive integer factors of 77553 that divides 77553 without a remainder.

1, 3, 7, 9, 21, 63, 1231, 3693, 8617, 11079, 25851

Step-4: Factors of 77561

List of positive integer factors of 77561 that divides 77553 without a remainder.

1, 11, 121, 641, 7051

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 77553 and 77561. The biggest common factor number is the GCF number.
So the greatest common factor 77553 and 77561 is 1.

Also check out the Least Common Multiple of 77553 and 77561