What is the Greatest Common Factor of 11771 and 11781?

Greatest common factor (GCF) of 11771 and 11781 is 1.

GCF(11771,11781) = 1

We will now calculate the prime factors of 11771 and 11781, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 11771 and 11781.

How to find the GCF of 11771 and 11781?

We will first find the prime factorization of 11771 and 11781. After we will calculate the factors of 11771 and 11781 and find the biggest common factor number .

Step-1: Prime Factorization of 11771

Prime factors of 11771 are 79, 149. Prime factorization of 11771 in exponential form is:

11771 = 79¹ × 149¹

Step-2: Prime Factorization of 11781

Prime factors of 11781 are 3, 7, 11, 17. Prime factorization of 11781 in exponential form is:

11781 = 3² × 7¹ × 11¹ × 17¹

Step-3: Factors of 11771

List of positive integer factors of 11771 that divides 11771 without a remainder.

1, 79, 149

Step-4: Factors of 11781

List of positive integer factors of 11781 that divides 11771 without a remainder.

1, 3, 7, 9, 11, 17, 21, 33, 51, 63, 77, 99, 119, 153, 187, 231, 357, 561, 693, 1071, 1309, 1683, 3927

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 11771 and 11781. The biggest common factor number is the GCF number.
So the greatest common factor 11771 and 11781 is 1.

Also check out the Least Common Multiple of 11771 and 11781