What is the Greatest Common Factor of 20955 and 20973?

Greatest common factor (GCF) of 20955 and 20973 is 3.

GCF(20955,20973) = 3

We will now calculate the prime factors of 20955 and 20973, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 20955 and 20973.

How to find the GCF of 20955 and 20973?

We will first find the prime factorization of 20955 and 20973. After we will calculate the factors of 20955 and 20973 and find the biggest common factor number .

Step-1: Prime Factorization of 20955

Prime factors of 20955 are 3, 5, 11, 127. Prime factorization of 20955 in exponential form is:

20955 = 3¹ × 5¹ × 11¹ × 127¹

Step-2: Prime Factorization of 20973

Prime factors of 20973 are 3, 6991. Prime factorization of 20973 in exponential form is:

20973 = 3¹ × 6991¹

Step-3: Factors of 20955

List of positive integer factors of 20955 that divides 20955 without a remainder.

1, 3, 5, 11, 15, 33, 55, 127, 165, 381, 635, 1397, 1905, 4191, 6985

Step-4: Factors of 20973

List of positive integer factors of 20973 that divides 20955 without a remainder.

1, 3, 6991

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 20955 and 20973. The biggest common factor number is the GCF number.
So the greatest common factor 20955 and 20973 is 3.

Also check out the Least Common Multiple of 20955 and 20973