What is the Greatest Common Factor of 6439 and 6445?

Greatest common factor (GCF) of 6439 and 6445 is 1.

GCF(6439,6445) = 1

We will now calculate the prime factors of 6439 and 6445, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 6439 and 6445.

How to find the GCF of 6439 and 6445?

We will first find the prime factorization of 6439 and 6445. After we will calculate the factors of 6439 and 6445 and find the biggest common factor number .

Step-1: Prime Factorization of 6439

Prime factors of 6439 are 47, 137. Prime factorization of 6439 in exponential form is:

6439 = 47¹ × 137¹

Step-2: Prime Factorization of 6445

Prime factors of 6445 are 5, 1289. Prime factorization of 6445 in exponential form is:

6445 = 5¹ × 1289¹

Step-3: Factors of 6439

List of positive integer factors of 6439 that divides 6439 without a remainder.

1, 47, 137

Step-4: Factors of 6445

List of positive integer factors of 6445 that divides 6439 without a remainder.

1, 5, 1289

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 6439 and 6445. The biggest common factor number is the GCF number.
So the greatest common factor 6439 and 6445 is 1.

Also check out the Least Common Multiple of 6439 and 6445