What is the Greatest Common Factor of 1115 and 1128?

Greatest common factor (GCF) of 1115 and 1128 is 1.

GCF(1115,1128) = 1

We will now calculate the prime factors of 1115 and 1128, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 1115 and 1128.

How to find the GCF of 1115 and 1128?

We will first find the prime factorization of 1115 and 1128. After we will calculate the factors of 1115 and 1128 and find the biggest common factor number .

Step-1: Prime Factorization of 1115

Prime factors of 1115 are 5, 223. Prime factorization of 1115 in exponential form is:

1115 = 5¹ × 223¹

Step-2: Prime Factorization of 1128

Prime factors of 1128 are 2, 3, 47. Prime factorization of 1128 in exponential form is:

1128 = 2³ × 3¹ × 47¹

Step-3: Factors of 1115

List of positive integer factors of 1115 that divides 1115 without a remainder.

1, 5, 223

Step-4: Factors of 1128

List of positive integer factors of 1128 that divides 1115 without a remainder.

1, 2, 3, 4, 6, 8, 12, 24, 47, 94, 141, 188, 282, 376, 564

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 1115 and 1128. The biggest common factor number is the GCF number.
So the greatest common factor 1115 and 1128 is 1.

Also check out the Least Common Multiple of 1115 and 1128