What is the Greatest Common Factor of 7966 and 7978?

Greatest common factor (GCF) of 7966 and 7978 is 2.

GCF(7966,7978) = 2

We will now calculate the prime factors of 7966 and 7978, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 7966 and 7978.

How to find the GCF of 7966 and 7978?

We will first find the prime factorization of 7966 and 7978. After we will calculate the factors of 7966 and 7978 and find the biggest common factor number .

Step-1: Prime Factorization of 7966

Prime factors of 7966 are 2, 7, 569. Prime factorization of 7966 in exponential form is:

7966 = 2¹ × 7¹ × 569¹

Step-2: Prime Factorization of 7978

Prime factors of 7978 are 2, 3989. Prime factorization of 7978 in exponential form is:

7978 = 2¹ × 3989¹

Step-3: Factors of 7966

List of positive integer factors of 7966 that divides 7966 without a remainder.

1, 2, 7, 14, 569, 1138, 3983

Step-4: Factors of 7978

List of positive integer factors of 7978 that divides 7966 without a remainder.

1, 2, 3989

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 7966 and 7978. The biggest common factor number is the GCF number.
So the greatest common factor 7966 and 7978 is 2.

Also check out the Least Common Multiple of 7966 and 7978