What is the Greatest Common Factor of 28977 and 28990?

Greatest common factor (GCF) of 28977 and 28990 is 13.

GCF(28977,28990) = 13

We will now calculate the prime factors of 28977 and 28990, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 28977 and 28990.

How to find the GCF of 28977 and 28990?

We will first find the prime factorization of 28977 and 28990. After we will calculate the factors of 28977 and 28990 and find the biggest common factor number .

Step-1: Prime Factorization of 28977

Prime factors of 28977 are 3, 13, 743. Prime factorization of 28977 in exponential form is:

28977 = 3¹ × 13¹ × 743¹

Step-2: Prime Factorization of 28990

Prime factors of 28990 are 2, 5, 13, 223. Prime factorization of 28990 in exponential form is:

28990 = 2¹ × 5¹ × 13¹ × 223¹

Step-3: Factors of 28977

List of positive integer factors of 28977 that divides 28977 without a remainder.

1, 3, 13, 39, 743, 2229, 9659

Step-4: Factors of 28990

List of positive integer factors of 28990 that divides 28977 without a remainder.

1, 2, 5, 10, 13, 26, 65, 130, 223, 446, 1115, 2230, 2899, 5798, 14495

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 28977 and 28990. The biggest common factor number is the GCF number.
So the greatest common factor 28977 and 28990 is 13.

Also check out the Least Common Multiple of 28977 and 28990