What is the Greatest Common Factor of 78990 and 79005?

Greatest common factor (GCF) of 78990 and 79005 is 15.

GCF(78990,79005) = 15

We will now calculate the prime factors of 78990 and 79005, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 78990 and 79005.

How to find the GCF of 78990 and 79005?

We will first find the prime factorization of 78990 and 79005. After we will calculate the factors of 78990 and 79005 and find the biggest common factor number .

Step-1: Prime Factorization of 78990

Prime factors of 78990 are 2, 3, 5, 2633. Prime factorization of 78990 in exponential form is:

78990 = 2¹ × 3¹ × 5¹ × 2633¹

Step-2: Prime Factorization of 79005

Prime factors of 79005 are 3, 5, 23, 229. Prime factorization of 79005 in exponential form is:

79005 = 3¹ × 5¹ × 23¹ × 229¹

Step-3: Factors of 78990

List of positive integer factors of 78990 that divides 78990 without a remainder.

1, 2, 3, 5, 6, 10, 15, 30, 2633, 5266, 7899, 13165, 15798, 26330, 39495

Step-4: Factors of 79005

List of positive integer factors of 79005 that divides 78990 without a remainder.

1, 3, 5, 15, 23, 69, 115, 229, 345, 687, 1145, 3435, 5267, 15801, 26335

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 78990 and 79005. The biggest common factor number is the GCF number.
So the greatest common factor 78990 and 79005 is 15.

Also check out the Least Common Multiple of 78990 and 79005