What is the Greatest Common Factor of 280 and 292?

Greatest common factor (GCF) of 280 and 292 is 4.

GCF(280,292) = 4

We will now calculate the prime factors of 280 and 292, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 280 and 292.

How to find the GCF of 280 and 292?

We will first find the prime factorization of 280 and 292. After we will calculate the factors of 280 and 292 and find the biggest common factor number .

Step-1: 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-2: Prime Factorization of 292

Prime factors of 292 are 2, 73. Prime factorization of 292 in exponential form is:

292 = 2² × 73¹

Step-3: Factors of 280

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

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

Step-4: Factors of 292

List of positive integer factors of 292 that divides 280 without a remainder.

1, 2, 4, 73, 146

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 280 and 292. The biggest common factor number is the GCF number.
So the greatest common factor 280 and 292 is 4.

Also check out the Least Common Multiple of 280 and 292