What is the Greatest Common Factor of 84015 and 84021?

Greatest common factor (GCF) of 84015 and 84021 is 3.

GCF(84015,84021) = 3

We will now calculate the prime factors of 84015 and 84021, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 84015 and 84021.

How to find the GCF of 84015 and 84021?

We will first find the prime factorization of 84015 and 84021. After we will calculate the factors of 84015 and 84021 and find the biggest common factor number .

Step-1: Prime Factorization of 84015

Prime factors of 84015 are 3, 5, 1867. Prime factorization of 84015 in exponential form is:

84015 = 3² × 5¹ × 1867¹

Step-2: Prime Factorization of 84021

Prime factors of 84021 are 3, 7, 4001. Prime factorization of 84021 in exponential form is:

84021 = 3¹ × 7¹ × 4001¹

Step-3: Factors of 84015

List of positive integer factors of 84015 that divides 84015 without a remainder.

1, 3, 5, 9, 15, 45, 1867, 5601, 9335, 16803, 28005

Step-4: Factors of 84021

List of positive integer factors of 84021 that divides 84015 without a remainder.

1, 3, 7, 21, 4001, 12003, 28007

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 84015 and 84021. The biggest common factor number is the GCF number.
So the greatest common factor 84015 and 84021 is 3.

Also check out the Least Common Multiple of 84015 and 84021