What is the Greatest Common Factor of 77909 and 77917?

Greatest common factor (GCF) of 77909 and 77917 is 1.

GCF(77909,77917) = 1

We will now calculate the prime factors of 77909 and 77917, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 77909 and 77917.

How to find the GCF of 77909 and 77917?

We will first find the prime factorization of 77909 and 77917. After we will calculate the factors of 77909 and 77917 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 77917

Prime factors of 77917 are 7, 11131. Prime factorization of 77917 in exponential form is:

77917 = 7¹ × 11131¹

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 77917

List of positive integer factors of 77917 that divides 77909 without a remainder.

1, 7, 11131

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 77909 and 77917. The biggest common factor number is the GCF number.
So the greatest common factor 77909 and 77917 is 1.

Also check out the Least Common Multiple of 77909 and 77917