What is the Greatest Common Factor of 6400 and 6407?

Greatest common factor (GCF) of 6400 and 6407 is 1.

GCF(6400,6407) = 1

We will now calculate the prime factors of 6400 and 6407, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 6400 and 6407.

How to find the GCF of 6400 and 6407?

We will first find the prime factorization of 6400 and 6407. After we will calculate the factors of 6400 and 6407 and find the biggest common factor number .

Step-1: Prime Factorization of 6400

Prime factors of 6400 are 2, 5. Prime factorization of 6400 in exponential form is:

6400 = 2⁸ × 5²

Step-2: Prime Factorization of 6407

Prime factors of 6407 are 43, 149. Prime factorization of 6407 in exponential form is:

6407 = 43¹ × 149¹

Step-3: Factors of 6400

List of positive integer factors of 6400 that divides 6400 without a remainder.

1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 640, 800, 1280, 1600, 3200

Step-4: Factors of 6407

List of positive integer factors of 6407 that divides 6400 without a remainder.

1, 43, 149

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 6400 and 6407. The biggest common factor number is the GCF number.
So the greatest common factor 6400 and 6407 is 1.

Also check out the Least Common Multiple of 6400 and 6407