What is the Greatest Common Factor of 29970 and 29985?

Greatest common factor (GCF) of 29970 and 29985 is 15.

GCF(29970,29985) = 15

We will now calculate the prime factors of 29970 and 29985, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 29970 and 29985.

How to find the GCF of 29970 and 29985?

We will first find the prime factorization of 29970 and 29985. After we will calculate the factors of 29970 and 29985 and find the biggest common factor number .

Step-1: Prime Factorization of 29970

Prime factors of 29970 are 2, 3, 5, 37. Prime factorization of 29970 in exponential form is:

29970 = 2¹ × 3⁴ × 5¹ × 37¹

Step-2: Prime Factorization of 29985

Prime factors of 29985 are 3, 5, 1999. Prime factorization of 29985 in exponential form is:

29985 = 3¹ × 5¹ × 1999¹

Step-3: Factors of 29970

List of positive integer factors of 29970 that divides 29970 without a remainder.

1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 37, 45, 54, 74, 81, 90, 111, 135, 162, 185, 222, 270, 333, 370, 405, 555, 666, 810, 999, 1110, 1665, 1998, 2997, 3330, 4995, 5994, 9990, 14985

Step-4: Factors of 29985

List of positive integer factors of 29985 that divides 29970 without a remainder.

1, 3, 5, 15, 1999, 5997, 9995

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 29970 and 29985. The biggest common factor number is the GCF number.
So the greatest common factor 29970 and 29985 is 15.

Also check out the Least Common Multiple of 29970 and 29985