Greatest Common Factor of 42, 18, 197

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

• Greatest Common Factor of 42, 18, 197 by common division method
• Greatest Common Factor of 42, 18, 197 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 197

List of positive integer factors of 197 that divides 197 without a remainder.

1,197

Greatest Common Factor

We found the factors 42,18,197 . The biggest common factor number is the GCF number.
So the greatest common factor 42,18,197 is 1.

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

• GCF of 52, 74, 564
• GCF of 38, 68, 667
• GCF of 55, 35, 473
• GCF of 23, 26, 646
• GCF of 72, 66, 134

1. What is the GCF of 42, 18, 197?

Answer: GCF of 42, 18, 197 is 1.

2. How to Find the GCF of 42, 18, 197

Answer: Greatest Common Factor(GCF) of 42, 18, 197 = 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, 197) = 1.