What is the Greatest Common Factor of 18440 and 18455?

Greatest common factor (GCF) of 18440 and 18455 is 5.

GCF(18440,18455) = 5

We will now calculate the prime factors of 18440 and 18455, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 18440 and 18455.

How to find the GCF of 18440 and 18455?

We will first find the prime factorization of 18440 and 18455. After we will calculate the factors of 18440 and 18455 and find the biggest common factor number .

Step-1: Prime Factorization of 18440

Prime factors of 18440 are 2, 5, 461. Prime factorization of 18440 in exponential form is:

18440 = 2³ × 5¹ × 461¹

Step-2: Prime Factorization of 18455

Prime factors of 18455 are 5, 3691. Prime factorization of 18455 in exponential form is:

18455 = 5¹ × 3691¹

Step-3: Factors of 18440

List of positive integer factors of 18440 that divides 18440 without a remainder.

1, 2, 4, 5, 8, 10, 20, 40, 461, 922, 1844, 2305, 3688, 4610, 9220

Step-4: Factors of 18455

List of positive integer factors of 18455 that divides 18440 without a remainder.

1, 5, 3691

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 18440 and 18455. The biggest common factor number is the GCF number.
So the greatest common factor 18440 and 18455 is 5.

Also check out the Least Common Multiple of 18440 and 18455