What is the Greatest Common Factor of 81957 and 81963?

Greatest common factor (GCF) of 81957 and 81963 is 3.

GCF(81957,81963) = 3

We will now calculate the prime factors of 81957 and 81963, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 81957 and 81963.

How to find the GCF of 81957 and 81963?

We will first find the prime factorization of 81957 and 81963. After we will calculate the factors of 81957 and 81963 and find the biggest common factor number .

Step-1: Prime Factorization of 81957

Prime factors of 81957 are 3, 17, 1607. Prime factorization of 81957 in exponential form is:

81957 = 3¹ × 17¹ × 1607¹

Step-2: Prime Factorization of 81963

Prime factors of 81963 are 3, 7, 1301. Prime factorization of 81963 in exponential form is:

81963 = 3² × 7¹ × 1301¹

Step-3: Factors of 81957

List of positive integer factors of 81957 that divides 81957 without a remainder.

1, 3, 17, 51, 1607, 4821, 27319

Step-4: Factors of 81963

List of positive integer factors of 81963 that divides 81957 without a remainder.

1, 3, 7, 9, 21, 63, 1301, 3903, 9107, 11709, 27321

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 81957 and 81963. The biggest common factor number is the GCF number.
So the greatest common factor 81957 and 81963 is 3.

Also check out the Least Common Multiple of 81957 and 81963