What is the Greatest Common Factor of 31815 and 31827?

Greatest common factor (GCF) of 31815 and 31827 is 3.

GCF(31815,31827) = 3

We will now calculate the prime factors of 31815 and 31827, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 31815 and 31827.

How to find the GCF of 31815 and 31827?

We will first find the prime factorization of 31815 and 31827. After we will calculate the factors of 31815 and 31827 and find the biggest common factor number .

Step-1: Prime Factorization of 31815

Prime factors of 31815 are 3, 5, 7, 101. Prime factorization of 31815 in exponential form is:

31815 = 3² × 5¹ × 7¹ × 101¹

Step-2: Prime Factorization of 31827

Prime factors of 31827 are 3, 103. Prime factorization of 31827 in exponential form is:

31827 = 3¹ × 103²

Step-3: Factors of 31815

List of positive integer factors of 31815 that divides 31815 without a remainder.

1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 101, 105, 303, 315, 505, 707, 909, 1515, 2121, 3535, 4545, 6363, 10605

Step-4: Factors of 31827

List of positive integer factors of 31827 that divides 31815 without a remainder.

1, 3, 103, 309, 10609

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 31815 and 31827. The biggest common factor number is the GCF number.
So the greatest common factor 31815 and 31827 is 3.

Also check out the Least Common Multiple of 31815 and 31827