What is the Greatest Common Factor of 72005 and 72020?

Greatest common factor (GCF) of 72005 and 72020 is 5.

GCF(72005,72020) = 5

We will now calculate the prime factors of 72005 and 72020, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 72005 and 72020.

How to find the GCF of 72005 and 72020?

We will first find the prime factorization of 72005 and 72020. After we will calculate the factors of 72005 and 72020 and find the biggest common factor number .

Step-1: Prime Factorization of 72005

Prime factors of 72005 are 5, 14401. Prime factorization of 72005 in exponential form is:

72005 = 5¹ × 14401¹

Step-2: Prime Factorization of 72020

Prime factors of 72020 are 2, 5, 13, 277. Prime factorization of 72020 in exponential form is:

72020 = 2² × 5¹ × 13¹ × 277¹

Step-3: Factors of 72005

List of positive integer factors of 72005 that divides 72005 without a remainder.

1, 5, 14401

Step-4: Factors of 72020

List of positive integer factors of 72020 that divides 72005 without a remainder.

1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 277, 554, 1108, 1385, 2770, 3601, 5540, 7202, 14404, 18005, 36010

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 72005 and 72020. The biggest common factor number is the GCF number.
So the greatest common factor 72005 and 72020 is 5.

Also check out the Least Common Multiple of 72005 and 72020