What is the Greatest Common Factor of 15438 and 15455?

Greatest common factor (GCF) of 15438 and 15455 is 1.

GCF(15438,15455) = 1

We will now calculate the prime factors of 15438 and 15455, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 15438 and 15455.

How to find the GCF of 15438 and 15455?

We will first find the prime factorization of 15438 and 15455. After we will calculate the factors of 15438 and 15455 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 15455

Prime factors of 15455 are 5, 11, 281. Prime factorization of 15455 in exponential form is:

15455 = 5¹ × 11¹ × 281¹

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 15455

List of positive integer factors of 15455 that divides 15438 without a remainder.

1, 5, 11, 55, 281, 1405, 3091

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 15438 and 15455. The biggest common factor number is the GCF number.
So the greatest common factor 15438 and 15455 is 1.

Also check out the Least Common Multiple of 15438 and 15455