What is the Greatest Common Factor of 4280 and 4285?

Greatest common factor (GCF) of 4280 and 4285 is 5.

GCF(4280,4285) = 5

We will now calculate the prime factors of 4280 and 4285, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 4280 and 4285.

How to find the GCF of 4280 and 4285?

We will first find the prime factorization of 4280 and 4285. After we will calculate the factors of 4280 and 4285 and find the biggest common factor number .

Step-1: Prime Factorization of 4280

Prime factors of 4280 are 2, 5, 107. Prime factorization of 4280 in exponential form is:

4280 = 2³ × 5¹ × 107¹

Step-2: Prime Factorization of 4285

Prime factors of 4285 are 5, 857. Prime factorization of 4285 in exponential form is:

4285 = 5¹ × 857¹

Step-3: Factors of 4280

List of positive integer factors of 4280 that divides 4280 without a remainder.

1, 2, 4, 5, 8, 10, 20, 40, 107, 214, 428, 535, 856, 1070, 2140

Step-4: Factors of 4285

List of positive integer factors of 4285 that divides 4280 without a remainder.

1, 5, 857

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 4280 and 4285. The biggest common factor number is the GCF number.
So the greatest common factor 4280 and 4285 is 5.

Also check out the Least Common Multiple of 4280 and 4285