What is the Greatest Common Factor of 15043 and 15057?

Greatest common factor (GCF) of 15043 and 15057 is 7.

GCF(15043,15057) = 7

We will now calculate the prime factors of 15043 and 15057, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 15043 and 15057.

How to find the GCF of 15043 and 15057?

We will first find the prime factorization of 15043 and 15057. After we will calculate the factors of 15043 and 15057 and find the biggest common factor number .

Step-1: Prime Factorization of 15043

Prime factors of 15043 are 7, 307. Prime factorization of 15043 in exponential form is:

15043 = 7² × 307¹

Step-2: Prime Factorization of 15057

Prime factors of 15057 are 3, 7, 239. Prime factorization of 15057 in exponential form is:

15057 = 3² × 7¹ × 239¹

Step-3: Factors of 15043

List of positive integer factors of 15043 that divides 15043 without a remainder.

1, 7, 49, 307, 2149

Step-4: Factors of 15057

List of positive integer factors of 15057 that divides 15043 without a remainder.

1, 3, 7, 9, 21, 63, 239, 717, 1673, 2151, 5019

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 15043 and 15057. The biggest common factor number is the GCF number.
So the greatest common factor 15043 and 15057 is 7.

Also check out the Least Common Multiple of 15043 and 15057