What is the Greatest Common Factor of 31978 and 31991?

Greatest common factor (GCF) of 31978 and 31991 is 1.

GCF(31978,31991) = 1

We will now calculate the prime factors of 31978 and 31991, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 31978 and 31991.

How to find the GCF of 31978 and 31991?

We will first find the prime factorization of 31978 and 31991. After we will calculate the factors of 31978 and 31991 and find the biggest common factor number .

Step-1: Prime Factorization of 31978

Prime factors of 31978 are 2, 59, 271. Prime factorization of 31978 in exponential form is:

31978 = 2¹ × 59¹ × 271¹

Step-2: Prime Factorization of 31991

Prime factors of 31991 are 31991. Prime factorization of 31991 in exponential form is:

31991 = 31991¹

Step-3: Factors of 31978

List of positive integer factors of 31978 that divides 31978 without a remainder.

1, 2, 59, 118, 271, 542, 15989

Step-4: Factors of 31991

List of positive integer factors of 31991 that divides 31978 without a remainder.

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 31978 and 31991. The biggest common factor number is the GCF number.
So the greatest common factor 31978 and 31991 is 1.

Also check out the Least Common Multiple of 31978 and 31991