What is the Greatest Common Factor of 18487 and 18506?

Greatest common factor (GCF) of 18487 and 18506 is 19.

GCF(18487,18506) = 19

We will now calculate the prime factors of 18487 and 18506, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 18487 and 18506.

How to find the GCF of 18487 and 18506?

We will first find the prime factorization of 18487 and 18506. After we will calculate the factors of 18487 and 18506 and find the biggest common factor number .

Step-1: Prime Factorization of 18487

Prime factors of 18487 are 7, 19, 139. Prime factorization of 18487 in exponential form is:

18487 = 7¹ × 19¹ × 139¹

Step-2: Prime Factorization of 18506

Prime factors of 18506 are 2, 19, 487. Prime factorization of 18506 in exponential form is:

18506 = 2¹ × 19¹ × 487¹

Step-3: Factors of 18487

List of positive integer factors of 18487 that divides 18487 without a remainder.

1, 7, 19, 133, 139, 973, 2641

Step-4: Factors of 18506

List of positive integer factors of 18506 that divides 18487 without a remainder.

1, 2, 19, 38, 487, 974, 9253

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 18487 and 18506. The biggest common factor number is the GCF number.
So the greatest common factor 18487 and 18506 is 19.

Also check out the Least Common Multiple of 18487 and 18506