What is the Greatest Common Factor of 78140 and 78158?

Greatest common factor (GCF) of 78140 and 78158 is 2.

GCF(78140,78158) = 2

We will now calculate the prime factors of 78140 and 78158, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 78140 and 78158.

How to find the GCF of 78140 and 78158?

We will first find the prime factorization of 78140 and 78158. After we will calculate the factors of 78140 and 78158 and find the biggest common factor number .

Step-1: Prime Factorization of 78140

Prime factors of 78140 are 2, 5, 3907. Prime factorization of 78140 in exponential form is:

78140 = 2² × 5¹ × 3907¹

Step-2: Prime Factorization of 78158

Prime factors of 78158 are 2, 39079. Prime factorization of 78158 in exponential form is:

78158 = 2¹ × 39079¹

Step-3: Factors of 78140

List of positive integer factors of 78140 that divides 78140 without a remainder.

1, 2, 4, 5, 10, 20, 3907, 7814, 15628, 19535, 39070

Step-4: Factors of 78158

List of positive integer factors of 78158 that divides 78140 without a remainder.

1, 2, 39079

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 78140 and 78158. The biggest common factor number is the GCF number.
So the greatest common factor 78140 and 78158 is 2.

Also check out the Least Common Multiple of 78140 and 78158