What is the Greatest Common Factor of 40390 and 40399?

Greatest common factor (GCF) of 40390 and 40399 is 1.

GCF(40390,40399) = 1

We will now calculate the prime factors of 40390 and 40399, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 40390 and 40399.

How to find the GCF of 40390 and 40399?

We will first find the prime factorization of 40390 and 40399. After we will calculate the factors of 40390 and 40399 and find the biggest common factor number .

Step-1: Prime Factorization of 40390

Prime factors of 40390 are 2, 5, 7, 577. Prime factorization of 40390 in exponential form is:

40390 = 2¹ × 5¹ × 7¹ × 577¹

Step-2: Prime Factorization of 40399

Prime factors of 40399 are 71, 569. Prime factorization of 40399 in exponential form is:

40399 = 71¹ × 569¹

Step-3: Factors of 40390

List of positive integer factors of 40390 that divides 40390 without a remainder.

1, 2, 5, 7, 10, 14, 35, 70, 577, 1154, 2885, 4039, 5770, 8078, 20195

Step-4: Factors of 40399

List of positive integer factors of 40399 that divides 40390 without a remainder.

1, 71, 569

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 40390 and 40399. The biggest common factor number is the GCF number.
So the greatest common factor 40390 and 40399 is 1.

Also check out the Least Common Multiple of 40390 and 40399