What is the Greatest Common Factor of 19774 and 19778?

Greatest common factor (GCF) of 19774 and 19778 is 2.

GCF(19774,19778) = 2

We will now calculate the prime factors of 19774 and 19778, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 19774 and 19778.

How to find the GCF of 19774 and 19778?

We will first find the prime factorization of 19774 and 19778. After we will calculate the factors of 19774 and 19778 and find the biggest common factor number .

Step-1: Prime Factorization of 19774

Prime factors of 19774 are 2, 9887. Prime factorization of 19774 in exponential form is:

19774 = 2¹ × 9887¹

Step-2: Prime Factorization of 19778

Prime factors of 19778 are 2, 11, 29, 31. Prime factorization of 19778 in exponential form is:

19778 = 2¹ × 11¹ × 29¹ × 31¹

Step-3: Factors of 19774

List of positive integer factors of 19774 that divides 19774 without a remainder.

1, 2, 9887

Step-4: Factors of 19778

List of positive integer factors of 19778 that divides 19774 without a remainder.

1, 2, 11, 22, 29, 31, 58, 62, 319, 341, 638, 682, 899, 1798, 9889

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 19774 and 19778. The biggest common factor number is the GCF number.
So the greatest common factor 19774 and 19778 is 2.

Also check out the Least Common Multiple of 19774 and 19778