Greatest Common Factor of 18, 81, 97, 59, 55

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

• Greatest Common Factor of 18, 81, 97, 59, 55 by common division method
• Greatest Common Factor of 18, 81, 97, 59, 55 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 81

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

1,3,9,27,81

Factors of 97

List of positive integer factors of 97 that divides 97 without a remainder.

1,97

Factors of 59

List of positive integer factors of 59 that divides 59 without a remainder.

1,59

Factors of 55

List of positive integer factors of 55 that divides 55 without a remainder.

1,5,11,55

Greatest Common Factor

We found the factors 18,81,97,59,55 . The biggest common factor number is the GCF number.
So the greatest common factor 18,81,97,59,55 is 1.

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

• GCF of 47, 79, 17, 79, 20
• GCF of 10, 79, 57, 27, 49
• GCF of 33, 95, 63, 84, 95
• GCF of 84, 55, 60, 96, 25
• GCF of 50, 41, 71, 20, 60

1. What is the GCF of 18, 81, 97, 59, 55?

Answer: GCF of 18, 81, 97, 59, 55 is 1.

2. How to Find the GCF of 18, 81, 97, 59, 55

Answer: Greatest Common Factor(GCF) of 18, 81, 97, 59, 55 = 1

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

Step 2: Then multiply all the prime factors GCF(18, 81, 97, 59, 55) = 1.