Greatest Common Factor of 21, 97, 18, 259

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

• Greatest Common Factor of 21, 97, 18, 259 by common division method
• Greatest Common Factor of 21, 97, 18, 259 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 21

List of positive integer factors of 21 that divides 21 without a remainder.

1,3,7,21

Factors of 97

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

1,97

Factors of 18

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

1,2,3,6,9,18

Factors of 259

List of positive integer factors of 259 that divides 259 without a remainder.

1,7,37,259

Greatest Common Factor

We found the factors 21,97,18,259 . The biggest common factor number is the GCF number.
So the greatest common factor 21,97,18,259 is 1.

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

• GCF of 92, 34, 13, 574
• GCF of 47, 16, 14, 672
• GCF of 79, 60, 93, 792
• GCF of 30, 70, 20, 177
• GCF of 11, 76, 98, 645

1. What is the GCF of 21, 97, 18, 259?

Answer: GCF of 21, 97, 18, 259 is 1.

2. How to Find the GCF of 21, 97, 18, 259

Answer: Greatest Common Factor(GCF) of 21, 97, 18, 259 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 97, 18, 259) = 1.