What is the Greatest Common Factor of 7940 and 7946?

Greatest common factor (GCF) of 7940 and 7946 is 2.

GCF(7940,7946) = 2

We will now calculate the prime factors of 7940 and 7946, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 7940 and 7946.

How to find the GCF of 7940 and 7946?

We will first find the prime factorization of 7940 and 7946. After we will calculate the factors of 7940 and 7946 and find the biggest common factor number .

Step-1: Prime Factorization of 7940

Prime factors of 7940 are 2, 5, 397. Prime factorization of 7940 in exponential form is:

7940 = 2² × 5¹ × 397¹

Step-2: Prime Factorization of 7946

Prime factors of 7946 are 2, 29, 137. Prime factorization of 7946 in exponential form is:

7946 = 2¹ × 29¹ × 137¹

Step-3: Factors of 7940

List of positive integer factors of 7940 that divides 7940 without a remainder.

1, 2, 4, 5, 10, 20, 397, 794, 1588, 1985, 3970

Step-4: Factors of 7946

List of positive integer factors of 7946 that divides 7940 without a remainder.

1, 2, 29, 58, 137, 274, 3973

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 7940 and 7946. The biggest common factor number is the GCF number.
So the greatest common factor 7940 and 7946 is 2.

Also check out the Least Common Multiple of 7940 and 7946