What is the Greatest Common Factor of 20761 and 20774?

Greatest common factor (GCF) of 20761 and 20774 is 13.

GCF(20761,20774) = 13

We will now calculate the prime factors of 20761 and 20774, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 20761 and 20774.

How to find the GCF of 20761 and 20774?

We will first find the prime factorization of 20761 and 20774. After we will calculate the factors of 20761 and 20774 and find the biggest common factor number .

Step-1: Prime Factorization of 20761

Prime factors of 20761 are 13, 1597. Prime factorization of 20761 in exponential form is:

20761 = 13¹ × 1597¹

Step-2: Prime Factorization of 20774

Prime factors of 20774 are 2, 13, 17, 47. Prime factorization of 20774 in exponential form is:

20774 = 2¹ × 13¹ × 17¹ × 47¹

Step-3: Factors of 20761

List of positive integer factors of 20761 that divides 20761 without a remainder.

1, 13, 1597

Step-4: Factors of 20774

List of positive integer factors of 20774 that divides 20761 without a remainder.

1, 2, 13, 17, 26, 34, 47, 94, 221, 442, 611, 799, 1222, 1598, 10387

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 20761 and 20774. The biggest common factor number is the GCF number.
So the greatest common factor 20761 and 20774 is 13.

Also check out the Least Common Multiple of 20761 and 20774