What is the Greatest Common Factor of 15438 and 15442?

Greatest common factor (GCF) of 15438 and 15442 is 2.

GCF(15438,15442) = 2

We will now calculate the prime factors of 15438 and 15442, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 15438 and 15442.

How to find the GCF of 15438 and 15442?

We will first find the prime factorization of 15438 and 15442. After we will calculate the factors of 15438 and 15442 and find the biggest common factor number .

Step-1: Prime Factorization of 15438

Prime factors of 15438 are 2, 3, 31, 83. Prime factorization of 15438 in exponential form is:

15438 = 2¹ × 3¹ × 31¹ × 83¹

Step-2: Prime Factorization of 15442

Prime factors of 15442 are 2, 7, 1103. Prime factorization of 15442 in exponential form is:

15442 = 2¹ × 7¹ × 1103¹

Step-3: Factors of 15438

List of positive integer factors of 15438 that divides 15438 without a remainder.

1, 2, 3, 6, 31, 62, 83, 93, 166, 186, 249, 498, 2573, 5146, 7719

Step-4: Factors of 15442

List of positive integer factors of 15442 that divides 15438 without a remainder.

1, 2, 7, 14, 1103, 2206, 7721

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 15438 and 15442. The biggest common factor number is the GCF number.
So the greatest common factor 15438 and 15442 is 2.

Also check out the Least Common Multiple of 15438 and 15442