Greatest Common Factor of 17, 66, 81, 180

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

• Greatest Common Factor of 17, 66, 81, 180 by common division method
• Greatest Common Factor of 17, 66, 81, 180 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 17

List of positive integer factors of 17 that divides 17 without a remainder.

1,17

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 81

List of positive integer factors of 81 that divides 81 without a remainder.

1,3,9,27,81

Factors of 180

List of positive integer factors of 180 that divides 180 without a remainder.

1,2,3,4,5,6,9,10,12,15,18,20,30,36,45,60,90,180

Greatest Common Factor

We found the factors 17,66,81,180 . The biggest common factor number is the GCF number.
So the greatest common factor 17,66,81,180 is 1.

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

• GCF of 19, 91, 98, 735
• GCF of 19, 42, 80, 656
• GCF of 97, 55, 97, 609
• GCF of 16, 45, 59, 780
• GCF of 81, 47, 16, 409

1. What is the GCF of 17, 66, 81, 180?

Answer: GCF of 17, 66, 81, 180 is 1.

2. How to Find the GCF of 17, 66, 81, 180

Answer: Greatest Common Factor(GCF) of 17, 66, 81, 180 = 1

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

Step 2: Then multiply all the prime factors GCF(17, 66, 81, 180) = 1.