What is the Greatest Common Factor of 2015 and 2019?

Greatest common factor (GCF) of 2015 and 2019 is 1.

GCF(2015,2019) = 1

We will now calculate the prime factors of 2015 and 2019, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 2015 and 2019.

How to find the GCF of 2015 and 2019?

We will first find the prime factorization of 2015 and 2019. After we will calculate the factors of 2015 and 2019 and find the biggest common factor number .

Step-1: Prime Factorization of 2015

Prime factors of 2015 are 5, 13, 31. Prime factorization of 2015 in exponential form is:

2015 = 5¹ × 13¹ × 31¹

Step-2: Prime Factorization of 2019

Prime factors of 2019 are 3, 673. Prime factorization of 2019 in exponential form is:

2019 = 3¹ × 673¹

Step-3: Factors of 2015

List of positive integer factors of 2015 that divides 2015 without a remainder.

1, 5, 13, 31, 65, 155, 403

Step-4: Factors of 2019

List of positive integer factors of 2019 that divides 2015 without a remainder.

1, 3, 673

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 2015 and 2019. The biggest common factor number is the GCF number.
So the greatest common factor 2015 and 2019 is 1.

Also check out the Least Common Multiple of 2015 and 2019