What is the Greatest Common Factor of 77909 and 77921?

Greatest common factor (GCF) of 77909 and 77921 is 1.

GCF(77909,77921) = 1

We will now calculate the prime factors of 77909 and 77921, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 77909 and 77921.

How to find the GCF of 77909 and 77921?

We will first find the prime factorization of 77909 and 77921. After we will calculate the factors of 77909 and 77921 and find the biggest common factor number .

Step-1: Prime Factorization of 77909

Prime factors of 77909 are 13, 461. Prime factorization of 77909 in exponential form is:

77909 = 13² × 461¹

Step-2: Prime Factorization of 77921

Prime factors of 77921 are 67, 1163. Prime factorization of 77921 in exponential form is:

77921 = 67¹ × 1163¹

Step-3: Factors of 77909

List of positive integer factors of 77909 that divides 77909 without a remainder.

1, 13, 169, 461, 5993

Step-4: Factors of 77921

List of positive integer factors of 77921 that divides 77909 without a remainder.

1, 67, 1163

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 77909 and 77921. The biggest common factor number is the GCF number.
So the greatest common factor 77909 and 77921 is 1.

Also check out the Least Common Multiple of 77909 and 77921