What is the Greatest Common Factor of 66778 and 66790?

Greatest common factor (GCF) of 66778 and 66790 is 2.

GCF(66778,66790) = 2

We will now calculate the prime factors of 66778 and 66790, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 66778 and 66790.

How to find the GCF of 66778 and 66790?

We will first find the prime factorization of 66778 and 66790. After we will calculate the factors of 66778 and 66790 and find the biggest common factor number .

Step-1: Prime Factorization of 66778

Prime factors of 66778 are 2, 173, 193. Prime factorization of 66778 in exponential form is:

66778 = 2¹ × 173¹ × 193¹

Step-2: Prime Factorization of 66790

Prime factors of 66790 are 2, 5, 6679. Prime factorization of 66790 in exponential form is:

66790 = 2¹ × 5¹ × 6679¹

Step-3: Factors of 66778

List of positive integer factors of 66778 that divides 66778 without a remainder.

1, 2, 173, 193, 346, 386, 33389

Step-4: Factors of 66790

List of positive integer factors of 66790 that divides 66778 without a remainder.

1, 2, 5, 10, 6679, 13358, 33395

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 66778 and 66790. The biggest common factor number is the GCF number.
So the greatest common factor 66778 and 66790 is 2.

Also check out the Least Common Multiple of 66778 and 66790