Greatest Common Factor of 69, 91, 99, 20

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

• Greatest Common Factor of 69, 91, 99, 20 by common division method
• Greatest Common Factor of 69, 91, 99, 20 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 69

List of positive integer factors of 69 that divides 69 without a remainder.

1,3,23,69

Factors of 91

List of positive integer factors of 91 that divides 91 without a remainder.

1,7,13,91

Factors of 99

List of positive integer factors of 99 that divides 99 without a remainder.

1,3,9,11,33,99

Factors of 20

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

1,2,4,5,10,20

Greatest Common Factor

We found the factors 69,91,99,20 . The biggest common factor number is the GCF number.
So the greatest common factor 69,91,99,20 is 1.

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

• GCF of 30, 90, 20, 42
• GCF of 39, 94, 69, 82
• GCF of 21, 73, 54, 22
• GCF of 91, 34, 97, 35
• GCF of 46, 15, 98, 29

1. What is the GCF of 69, 91, 99, 20?

Answer: GCF of 69, 91, 99, 20 is 1.

2. How to Find the GCF of 69, 91, 99, 20

Answer: Greatest Common Factor(GCF) of 69, 91, 99, 20 = 1

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

Step 2: Then multiply all the prime factors GCF(69, 91, 99, 20) = 1.