What is the Greatest Common Factor of 38405 and 38415?

Greatest common factor (GCF) of 38405 and 38415 is 5.

GCF(38405,38415) = 5

We will now calculate the prime factors of 38405 and 38415, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 38405 and 38415.

How to find the GCF of 38405 and 38415?

We will first find the prime factorization of 38405 and 38415. After we will calculate the factors of 38405 and 38415 and find the biggest common factor number .

Step-1: Prime Factorization of 38405

Prime factors of 38405 are 5, 7681. Prime factorization of 38405 in exponential form is:

38405 = 5¹ × 7681¹

Step-2: Prime Factorization of 38415

Prime factors of 38415 are 3, 5, 13, 197. Prime factorization of 38415 in exponential form is:

38415 = 3¹ × 5¹ × 13¹ × 197¹

Step-3: Factors of 38405

List of positive integer factors of 38405 that divides 38405 without a remainder.

1, 5, 7681

Step-4: Factors of 38415

List of positive integer factors of 38415 that divides 38405 without a remainder.

1, 3, 5, 13, 15, 39, 65, 195, 197, 591, 985, 2561, 2955, 7683, 12805

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 38405 and 38415. The biggest common factor number is the GCF number.
So the greatest common factor 38405 and 38415 is 5.

Also check out the Least Common Multiple of 38405 and 38415