What is the Greatest Common Factor of 20661 and 20679?

Greatest common factor (GCF) of 20661 and 20679 is 3.

GCF(20661,20679) = 3

We will now calculate the prime factors of 20661 and 20679, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 20661 and 20679.

How to find the GCF of 20661 and 20679?

We will first find the prime factorization of 20661 and 20679. After we will calculate the factors of 20661 and 20679 and find the biggest common factor number .

Step-1: Prime Factorization of 20661

Prime factors of 20661 are 3, 71, 97. Prime factorization of 20661 in exponential form is:

20661 = 3¹ × 71¹ × 97¹

Step-2: Prime Factorization of 20679

Prime factors of 20679 are 3, 61, 113. Prime factorization of 20679 in exponential form is:

20679 = 3¹ × 61¹ × 113¹

Step-3: Factors of 20661

List of positive integer factors of 20661 that divides 20661 without a remainder.

1, 3, 71, 97, 213, 291, 6887

Step-4: Factors of 20679

List of positive integer factors of 20679 that divides 20661 without a remainder.

1, 3, 61, 113, 183, 339, 6893

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 20661 and 20679. The biggest common factor number is the GCF number.
So the greatest common factor 20661 and 20679 is 3.

Also check out the Least Common Multiple of 20661 and 20679