What is the Greatest Common Factor of 31857 and 31871?

Greatest common factor (GCF) of 31857 and 31871 is 7.

GCF(31857,31871) = 7

We will now calculate the prime factors of 31857 and 31871, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 31857 and 31871.

How to find the GCF of 31857 and 31871?

We will first find the prime factorization of 31857 and 31871. After we will calculate the factors of 31857 and 31871 and find the biggest common factor number .

Step-1: Prime Factorization of 31857

Prime factors of 31857 are 3, 7, 37, 41. Prime factorization of 31857 in exponential form is:

31857 = 3¹ × 7¹ × 37¹ × 41¹

Step-2: Prime Factorization of 31871

Prime factors of 31871 are 7, 29, 157. Prime factorization of 31871 in exponential form is:

31871 = 7¹ × 29¹ × 157¹

Step-3: Factors of 31857

List of positive integer factors of 31857 that divides 31857 without a remainder.

1, 3, 7, 21, 37, 41, 111, 123, 259, 287, 777, 861, 1517, 4551, 10619

Step-4: Factors of 31871

List of positive integer factors of 31871 that divides 31857 without a remainder.

1, 7, 29, 157, 203, 1099, 4553

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 31857 and 31871. The biggest common factor number is the GCF number.
So the greatest common factor 31857 and 31871 is 7.

Also check out the Least Common Multiple of 31857 and 31871