What is the Greatest Common Factor of 28055 and 28070?

Greatest common factor (GCF) of 28055 and 28070 is 5.

GCF(28055,28070) = 5

We will now calculate the prime factors of 28055 and 28070, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 28055 and 28070.

How to find the GCF of 28055 and 28070?

We will first find the prime factorization of 28055 and 28070. After we will calculate the factors of 28055 and 28070 and find the biggest common factor number .

Step-1: Prime Factorization of 28055

Prime factors of 28055 are 5, 31, 181. Prime factorization of 28055 in exponential form is:

28055 = 5¹ × 31¹ × 181¹

Step-2: Prime Factorization of 28070

Prime factors of 28070 are 2, 5, 7, 401. Prime factorization of 28070 in exponential form is:

28070 = 2¹ × 5¹ × 7¹ × 401¹

Step-3: Factors of 28055

List of positive integer factors of 28055 that divides 28055 without a remainder.

1, 5, 31, 155, 181, 905, 5611

Step-4: Factors of 28070

List of positive integer factors of 28070 that divides 28055 without a remainder.

1, 2, 5, 7, 10, 14, 35, 70, 401, 802, 2005, 2807, 4010, 5614, 14035

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 28055 and 28070. The biggest common factor number is the GCF number.
So the greatest common factor 28055 and 28070 is 5.

Also check out the Least Common Multiple of 28055 and 28070