What is the Greatest Common Factor of 1105 and 1109?

Greatest common factor (GCF) of 1105 and 1109 is 1.

GCF(1105,1109) = 1

We will now calculate the prime factors of 1105 and 1109, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 1105 and 1109.

How to find the GCF of 1105 and 1109?

We will first find the prime factorization of 1105 and 1109. After we will calculate the factors of 1105 and 1109 and find the biggest common factor number .

Step-1: Prime Factorization of 1105

Prime factors of 1105 are 5, 13, 17. Prime factorization of 1105 in exponential form is:

1105 = 5¹ × 13¹ × 17¹

Step-2: Prime Factorization of 1109

Prime factors of 1109 are 1109. Prime factorization of 1109 in exponential form is:

1109 = 1109¹

Step-3: Factors of 1105

List of positive integer factors of 1105 that divides 1105 without a remainder.

1, 5, 13, 17, 65, 85, 221

Step-4: Factors of 1109

List of positive integer factors of 1109 that divides 1105 without a remainder.

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 1105 and 1109. The biggest common factor number is the GCF number.
So the greatest common factor 1105 and 1109 is 1.

Also check out the Least Common Multiple of 1105 and 1109