What is the Greatest Common Factor of 78270 and 78280?

Greatest common factor (GCF) of 78270 and 78280 is 10.

GCF(78270,78280) = 10

We will now calculate the prime factors of 78270 and 78280, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 78270 and 78280.

How to find the GCF of 78270 and 78280?

We will first find the prime factorization of 78270 and 78280. After we will calculate the factors of 78270 and 78280 and find the biggest common factor number .

Step-1: Prime Factorization of 78270

Prime factors of 78270 are 2, 3, 5, 2609. Prime factorization of 78270 in exponential form is:

78270 = 2¹ × 3¹ × 5¹ × 2609¹

Step-2: Prime Factorization of 78280

Prime factors of 78280 are 2, 5, 19, 103. Prime factorization of 78280 in exponential form is:

78280 = 2³ × 5¹ × 19¹ × 103¹

Step-3: Factors of 78270

List of positive integer factors of 78270 that divides 78270 without a remainder.

1, 2, 3, 5, 6, 10, 15, 30, 2609, 5218, 7827, 13045, 15654, 26090, 39135

Step-4: Factors of 78280

List of positive integer factors of 78280 that divides 78270 without a remainder.

1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 103, 152, 190, 206, 380, 412, 515, 760, 824, 1030, 1957, 2060, 3914, 4120, 7828, 9785, 15656, 19570, 39140

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 78270 and 78280. The biggest common factor number is the GCF number.
So the greatest common factor 78270 and 78280 is 10.

Also check out the Least Common Multiple of 78270 and 78280