What is the Greatest Common Factor of 28970 and 28985?

Greatest common factor (GCF) of 28970 and 28985 is 5.

GCF(28970,28985) = 5

We will now calculate the prime factors of 28970 and 28985, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 28970 and 28985.

How to find the GCF of 28970 and 28985?

We will first find the prime factorization of 28970 and 28985. After we will calculate the factors of 28970 and 28985 and find the biggest common factor number .

Step-1: Prime Factorization of 28970

Prime factors of 28970 are 2, 5, 2897. Prime factorization of 28970 in exponential form is:

28970 = 2¹ × 5¹ × 2897¹

Step-2: Prime Factorization of 28985

Prime factors of 28985 are 5, 11, 17, 31. Prime factorization of 28985 in exponential form is:

28985 = 5¹ × 11¹ × 17¹ × 31¹

Step-3: Factors of 28970

List of positive integer factors of 28970 that divides 28970 without a remainder.

1, 2, 5, 10, 2897, 5794, 14485

Step-4: Factors of 28985

List of positive integer factors of 28985 that divides 28970 without a remainder.

1, 5, 11, 17, 31, 55, 85, 155, 187, 341, 527, 935, 1705, 2635, 5797

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 28970 and 28985. The biggest common factor number is the GCF number.
So the greatest common factor 28970 and 28985 is 5.

Also check out the Least Common Multiple of 28970 and 28985