Greatest Common Factor of 42, 18, 20, 83, 479

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

• Greatest Common Factor of 42, 18, 20, 83, 479 by common division method
• Greatest Common Factor of 42, 18, 20, 83, 479 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 42

List of positive integer factors of 42 that divides 42 without a remainder.

1,2,3,6,7,14,21,42

Factors of 18

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

1,2,3,6,9,18

Factors of 20

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

1,2,4,5,10,20

Factors of 83

List of positive integer factors of 83 that divides 83 without a remainder.

1,83

Factors of 479

List of positive integer factors of 479 that divides 479 without a remainder.

1,479

Greatest Common Factor

We found the factors 42,18,20,83,479 . The biggest common factor number is the GCF number.
So the greatest common factor 42,18,20,83,479 is 1.

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

• GCF of 18, 74, 11, 60, 663
• GCF of 46, 92, 71, 61, 554
• GCF of 28, 81, 80, 77, 955
• GCF of 10, 27, 49, 17, 874
• GCF of 54, 19, 33, 11, 423

1. What is the GCF of 42, 18, 20, 83, 479?

Answer: GCF of 42, 18, 20, 83, 479 is 1.

2. How to Find the GCF of 42, 18, 20, 83, 479

Answer: Greatest Common Factor(GCF) of 42, 18, 20, 83, 479 = 1

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

Step 2: Then multiply all the prime factors GCF(42, 18, 20, 83, 479) = 1.