Greatest Common Factor of 18, 71, 688

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

• Greatest Common Factor of 18, 71, 688 by common division method
• Greatest Common Factor of 18, 71, 688 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 71

List of positive integer factors of 71 that divides 71 without a remainder.

1,71

Factors of 688

List of positive integer factors of 688 that divides 688 without a remainder.

1,2,4,8,16,43,86,172,344,688

Greatest Common Factor

We found the factors 18,71,688 . The biggest common factor number is the GCF number.
So the greatest common factor 18,71,688 is 1.

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

• GCF of 87, 92, 168
• GCF of 46, 39, 689
• GCF of 31, 53, 206
• GCF of 22, 49, 590
• GCF of 90, 39, 428

1. What is the GCF of 18, 71, 688?

Answer: GCF of 18, 71, 688 is 1.

2. How to Find the GCF of 18, 71, 688

Answer: Greatest Common Factor(GCF) of 18, 71, 688 = 1

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

Step 2: Then multiply all the prime factors GCF(18, 71, 688) = 1.