What is the Greatest Common Factor of 31990 and 31999?

Greatest common factor (GCF) of 31990 and 31999 is 1.

GCF(31990,31999) = 1

We will now calculate the prime factors of 31990 and 31999, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 31990 and 31999.

How to find the GCF of 31990 and 31999?

We will first find the prime factorization of 31990 and 31999. After we will calculate the factors of 31990 and 31999 and find the biggest common factor number .

Step-1: Prime Factorization of 31990

Prime factors of 31990 are 2, 5, 7, 457. Prime factorization of 31990 in exponential form is:

31990 = 2¹ × 5¹ × 7¹ × 457¹

Step-2: Prime Factorization of 31999

Prime factors of 31999 are 11, 2909. Prime factorization of 31999 in exponential form is:

31999 = 11¹ × 2909¹

Step-3: Factors of 31990

List of positive integer factors of 31990 that divides 31990 without a remainder.

1, 2, 5, 7, 10, 14, 35, 70, 457, 914, 2285, 3199, 4570, 6398, 15995

Step-4: Factors of 31999

List of positive integer factors of 31999 that divides 31990 without a remainder.

1, 11, 2909

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 31990 and 31999. The biggest common factor number is the GCF number.
So the greatest common factor 31990 and 31999 is 1.

Also check out the Least Common Multiple of 31990 and 31999