Greatest Common Factor of 42, 18, 86, 615

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

• Greatest Common Factor of 42, 18, 86, 615 by common division method
• Greatest Common Factor of 42, 18, 86, 615 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 86

List of positive integer factors of 86 that divides 86 without a remainder.

1,2,43,86

Factors of 615

List of positive integer factors of 615 that divides 615 without a remainder.

1,3,5,15,41,123,205,615

Greatest Common Factor

We found the factors 42,18,86,615 . The biggest common factor number is the GCF number.
So the greatest common factor 42,18,86,615 is 1.

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

• GCF of 49, 83, 53, 749
• GCF of 44, 75, 21, 507
• GCF of 96, 55, 17, 565
• GCF of 84, 91, 32, 147
• GCF of 67, 53, 11, 261

1. What is the GCF of 42, 18, 86, 615?

Answer: GCF of 42, 18, 86, 615 is 1.

2. How to Find the GCF of 42, 18, 86, 615

Answer: Greatest Common Factor(GCF) of 42, 18, 86, 615 = 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, 86, 615) = 1.