What is the Greatest Common Factor of 31990 and 32005?

Greatest common factor (GCF) of 31990 and 32005 is 5.

GCF(31990,32005) = 5

We will now calculate the prime factors of 31990 and 32005, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 31990 and 32005.

How to find the GCF of 31990 and 32005?

We will first find the prime factorization of 31990 and 32005. After we will calculate the factors of 31990 and 32005 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 32005

Prime factors of 32005 are 5, 37, 173. Prime factorization of 32005 in exponential form is:

32005 = 5¹ × 37¹ × 173¹

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 32005

List of positive integer factors of 32005 that divides 31990 without a remainder.

1, 5, 37, 173, 185, 865, 6401

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 31990 and 32005. The biggest common factor number is the GCF number.
So the greatest common factor 31990 and 32005 is 5.

Also check out the Least Common Multiple of 31990 and 32005