What is the Greatest Common Factor of 78189 and 78203?

Greatest common factor (GCF) of 78189 and 78203 is 1.

GCF(78189,78203) = 1

We will now calculate the prime factors of 78189 and 78203, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 78189 and 78203.

How to find the GCF of 78189 and 78203?

We will first find the prime factorization of 78189 and 78203. After we will calculate the factors of 78189 and 78203 and find the biggest common factor number .

Step-1: Prime Factorization of 78189

Prime factors of 78189 are 3, 67, 389. Prime factorization of 78189 in exponential form is:

78189 = 3¹ × 67¹ × 389¹

Step-2: Prime Factorization of 78203

Prime factors of 78203 are 78203. Prime factorization of 78203 in exponential form is:

78203 = 78203¹

Step-3: Factors of 78189

List of positive integer factors of 78189 that divides 78189 without a remainder.

1, 3, 67, 201, 389, 1167, 26063

Step-4: Factors of 78203

List of positive integer factors of 78203 that divides 78189 without a remainder.

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 78189 and 78203. The biggest common factor number is the GCF number.
So the greatest common factor 78189 and 78203 is 1.

Also check out the Least Common Multiple of 78189 and 78203