What is the Greatest Common Factor of 78020 and 78028?

Greatest common factor (GCF) of 78020 and 78028 is 4.

GCF(78020,78028) = 4

We will now calculate the prime factors of 78020 and 78028, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 78020 and 78028.

How to find the GCF of 78020 and 78028?

We will first find the prime factorization of 78020 and 78028. After we will calculate the factors of 78020 and 78028 and find the biggest common factor number .

Step-1: Prime Factorization of 78020

Prime factors of 78020 are 2, 5, 47, 83. Prime factorization of 78020 in exponential form is:

78020 = 2² × 5¹ × 47¹ × 83¹

Step-2: Prime Factorization of 78028

Prime factors of 78028 are 2, 19507. Prime factorization of 78028 in exponential form is:

78028 = 2² × 19507¹

Step-3: Factors of 78020

List of positive integer factors of 78020 that divides 78020 without a remainder.

1, 2, 4, 5, 10, 20, 47, 83, 94, 166, 188, 235, 332, 415, 470, 830, 940, 1660, 3901, 7802, 15604, 19505, 39010

Step-4: Factors of 78028

List of positive integer factors of 78028 that divides 78020 without a remainder.

1, 2, 4, 19507, 39014

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 78020 and 78028. The biggest common factor number is the GCF number.
So the greatest common factor 78020 and 78028 is 4.

Also check out the Least Common Multiple of 78020 and 78028