What is the Greatest Common Factor of 17990 and 17999?

Greatest common factor (GCF) of 17990 and 17999 is 1.

GCF(17990,17999) = 1

We will now calculate the prime factors of 17990 and 17999, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 17990 and 17999.

How to find the GCF of 17990 and 17999?

We will first find the prime factorization of 17990 and 17999. After we will calculate the factors of 17990 and 17999 and find the biggest common factor number .

Step-1: Prime Factorization of 17990

Prime factors of 17990 are 2, 5, 7, 257. Prime factorization of 17990 in exponential form is:

17990 = 2¹ × 5¹ × 7¹ × 257¹

Step-2: Prime Factorization of 17999

Prime factors of 17999 are 41, 439. Prime factorization of 17999 in exponential form is:

17999 = 41¹ × 439¹

Step-3: Factors of 17990

List of positive integer factors of 17990 that divides 17990 without a remainder.

1, 2, 5, 7, 10, 14, 35, 70, 257, 514, 1285, 1799, 2570, 3598, 8995

Step-4: Factors of 17999

List of positive integer factors of 17999 that divides 17990 without a remainder.

1, 41, 439

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 17990 and 17999. The biggest common factor number is the GCF number.
So the greatest common factor 17990 and 17999 is 1.

Also check out the Least Common Multiple of 17990 and 17999