Greatest Common Factor of 18, 66, 77

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

• Greatest Common Factor of 18, 66, 77 by common division method
• Greatest Common Factor of 18, 66, 77 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 18

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

1,2,3,6,9,18

Factors of 66

List of positive integer factors of 66 that divides 66 without a remainder.

1,2,3,6,11,22,33,66

Factors of 77

List of positive integer factors of 77 that divides 77 without a remainder.

1,7,11,77

Greatest Common Factor

We found the factors 18,66,77 . The biggest common factor number is the GCF number.
So the greatest common factor 18,66,77 is 1.

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

• GCF of 98, 46, 88
• GCF of 61, 97, 89
• GCF of 80, 47, 94
• GCF of 62, 73, 43
• GCF of 60, 78, 31

1. What is the GCF of 18, 66, 77?

Answer: GCF of 18, 66, 77 is 1.

2. How to Find the GCF of 18, 66, 77

Answer: Greatest Common Factor(GCF) of 18, 66, 77 = 1

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

Step 2: Then multiply all the prime factors GCF(18, 66, 77) = 1.