What is the Greatest Common Factor of 1161 and 1178?

Greatest common factor (GCF) of 1161 and 1178 is 1.

GCF(1161,1178) = 1

We will now calculate the prime factors of 1161 and 1178, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 1161 and 1178.

How to find the GCF of 1161 and 1178?

We will first find the prime factorization of 1161 and 1178. After we will calculate the factors of 1161 and 1178 and find the biggest common factor number .

Step-1: Prime Factorization of 1161

Prime factors of 1161 are 3, 43. Prime factorization of 1161 in exponential form is:

1161 = 3³ × 43¹

Step-2: Prime Factorization of 1178

Prime factors of 1178 are 2, 19, 31. Prime factorization of 1178 in exponential form is:

1178 = 2¹ × 19¹ × 31¹

Step-3: Factors of 1161

List of positive integer factors of 1161 that divides 1161 without a remainder.

1, 3, 9, 27, 43, 129, 387

Step-4: Factors of 1178

List of positive integer factors of 1178 that divides 1161 without a remainder.

1, 2, 19, 31, 38, 62, 589

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 1161 and 1178. The biggest common factor number is the GCF number.
So the greatest common factor 1161 and 1178 is 1.

Also check out the Least Common Multiple of 1161 and 1178