Greatest Common Factor of 68, 20, 9, 1

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

• Greatest Common Factor of 68, 20, 9, 1 by common division method
• Greatest Common Factor of 68, 20, 9, 1 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 68

List of positive integer factors of 68 that divides 68 without a remainder.

1,2,4,17,34,68

Factors of 20

List of positive integer factors of 20 that divides 20 without a remainder.

1,2,4,5,10,20

Factors of 9

List of positive integer factors of 9 that divides 9 without a remainder.

1,3,9

Factors of 1

List of positive integer factors of 1 that divides 1 without a remainder.

1

Greatest Common Factor

We found the factors 68,20,9,1 . The biggest common factor number is the GCF number.
So the greatest common factor 68,20,9,1 is 1.

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

• GCF of 49, 67, 6, 6
• GCF of 94, 89, 7, 6
• GCF of 60, 88, 5, 8
• GCF of 53, 94, 9, 8
• GCF of 29, 78, 3, 9

1. What is the GCF of 68, 20, 9, 1?

Answer: GCF of 68, 20, 9, 1 is 1.

2. How to Find the GCF of 68, 20, 9, 1

Answer: Greatest Common Factor(GCF) of 68, 20, 9, 1 = 1

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

Step 2: Then multiply all the prime factors GCF(68, 20, 9, 1) = 1.