What is the Greatest Common Factor of 30981 and 30987?

Greatest common factor (GCF) of 30981 and 30987 is 3.

GCF(30981,30987) = 3

We will now calculate the prime factors of 30981 and 30987, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 30981 and 30987.

How to find the GCF of 30981 and 30987?

We will first find the prime factorization of 30981 and 30987. After we will calculate the factors of 30981 and 30987 and find the biggest common factor number .

Step-1: Prime Factorization of 30981

Prime factors of 30981 are 3, 23, 449. Prime factorization of 30981 in exponential form is:

30981 = 3¹ × 23¹ × 449¹

Step-2: Prime Factorization of 30987

Prime factors of 30987 are 3, 11, 313. Prime factorization of 30987 in exponential form is:

30987 = 3² × 11¹ × 313¹

Step-3: Factors of 30981

List of positive integer factors of 30981 that divides 30981 without a remainder.

1, 3, 23, 69, 449, 1347, 10327

Step-4: Factors of 30987

List of positive integer factors of 30987 that divides 30981 without a remainder.

1, 3, 9, 11, 33, 99, 313, 939, 2817, 3443, 10329

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 30981 and 30987. The biggest common factor number is the GCF number.
So the greatest common factor 30981 and 30987 is 3.

Also check out the Least Common Multiple of 30981 and 30987