Greatest Common Factor of 128, 189, 18

Greatest common factor or Greatest common divisor (GCD) can be calculated in two ways

• Greatest Common Factor of 128, 189, 18 by common division method
• Greatest Common Factor of 128, 189, 18 with matching the biggest common factor

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∴ GCF of numbers is 1 because of no common factors present between them.

Factors of 128

List of positive integer factors of 128 that divides 128 without a remainder.

1,2,4,8,16,32,64,128

Factors of 189

List of positive integer factors of 189 that divides 189 without a remainder.

1,3,7,9,21,27,63,189

Factors of 18

List of positive integer factors of 18 that divides 18 without a remainder.

1,2,3,6,9,18

Greatest Common Factor

We found the factors 128,189,18 . The biggest common factor number is the GCF number.
So the greatest common factor 128,189,18 is 1.

Here are some samples of GCF of two or more Numbers calculations.

• GCF of 910, 412, 79
• GCF of 912, 376, 65
• GCF of 425, 823, 60
• GCF of 406, 879, 65
• GCF of 135, 260, 74

1. What is the GCF of 128, 189, 18?

Answer: GCF of 128, 189, 18 is 1.

2. How to Find the GCF of 128, 189, 18

Answer: Greatest Common Factor(GCF) of 128, 189, 18 = 1

Step 1: Divide all the numbers with common prime numbers having remainder zero.

Step 2: Then multiply all the prime factors GCF(128, 189, 18) = 1.