Greatest Common Factor of 66, 90, 65, 18

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

• Greatest Common Factor of 66, 90, 65, 18 by common division method
• Greatest Common Factor of 66, 90, 65, 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 66

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

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

Factors of 90

List of positive integer factors of 90 that divides 90 without a remainder.

1,2,3,5,6,9,10,15,18,30,45,90

Factors of 65

List of positive integer factors of 65 that divides 65 without a remainder.

1,5,13,65

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 66,90,65,18 . The biggest common factor number is the GCF number.
So the greatest common factor 66,90,65,18 is 1.

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

• GCF of 31, 18, 82, 43
• GCF of 38, 87, 37, 69
• GCF of 56, 49, 41, 14
• GCF of 86, 95, 78, 72
• GCF of 18, 37, 55, 46

1. What is the GCF of 66, 90, 65, 18?

Answer: GCF of 66, 90, 65, 18 is 1.

2. How to Find the GCF of 66, 90, 65, 18

Answer: Greatest Common Factor(GCF) of 66, 90, 65, 18 = 1

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

Step 2: Then multiply all the prime factors GCF(66, 90, 65, 18) = 1.