What is the Greatest Common Factor of 28255 and 28270?

Greatest common factor (GCF) of 28255 and 28270 is 5.

GCF(28255,28270) = 5

We will now calculate the prime factors of 28255 and 28270, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 28255 and 28270.

How to find the GCF of 28255 and 28270?

We will first find the prime factorization of 28255 and 28270. After we will calculate the factors of 28255 and 28270 and find the biggest common factor number .

Step-1: Prime Factorization of 28255

Prime factors of 28255 are 5, 5651. Prime factorization of 28255 in exponential form is:

28255 = 5¹ × 5651¹

Step-2: Prime Factorization of 28270

Prime factors of 28270 are 2, 5, 11, 257. Prime factorization of 28270 in exponential form is:

28270 = 2¹ × 5¹ × 11¹ × 257¹

Step-3: Factors of 28255

List of positive integer factors of 28255 that divides 28255 without a remainder.

1, 5, 5651

Step-4: Factors of 28270

List of positive integer factors of 28270 that divides 28255 without a remainder.

1, 2, 5, 10, 11, 22, 55, 110, 257, 514, 1285, 2570, 2827, 5654, 14135

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 28255 and 28270. The biggest common factor number is the GCF number.
So the greatest common factor 28255 and 28270 is 5.

Also check out the Least Common Multiple of 28255 and 28270