What is the Greatest Common Factor of 272 and 280?

Greatest common factor (GCF) of 272 and 280 is 8.

GCF(272,280) = 8

We will now calculate the prime factors of 272 and 280, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 272 and 280.

How to find the GCF of 272 and 280?

We will first find the prime factorization of 272 and 280. After we will calculate the factors of 272 and 280 and find the biggest common factor number .

Step-1: Prime Factorization of 272

Prime factors of 272 are 2, 17. Prime factorization of 272 in exponential form is:

272 = 2⁴ × 17¹

Step-2: Prime Factorization of 280

Prime factors of 280 are 2, 5, 7. Prime factorization of 280 in exponential form is:

280 = 2³ × 5¹ × 7¹

Step-3: Factors of 272

List of positive integer factors of 272 that divides 272 without a remainder.

1, 2, 4, 8, 16, 17, 34, 68, 136

Step-4: Factors of 280

List of positive integer factors of 280 that divides 272 without a remainder.

1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 272 and 280. The biggest common factor number is the GCF number.
So the greatest common factor 272 and 280 is 8.

Also check out the Least Common Multiple of 272 and 280