Greatest Common Factor of 17, 42, 34, 15

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

• Greatest Common Factor of 17, 42, 34, 15 by common division method
• Greatest Common Factor of 17, 42, 34, 15 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 17

List of positive integer factors of 17 that divides 17 without a remainder.

1,17

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 34

List of positive integer factors of 34 that divides 34 without a remainder.

1,2,17,34

Factors of 15

List of positive integer factors of 15 that divides 15 without a remainder.

1,3,5,15

Greatest Common Factor

We found the factors 17,42,34,15 . The biggest common factor number is the GCF number.
So the greatest common factor 17,42,34,15 is 1.

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

• GCF of 84, 68, 67, 22
• GCF of 78, 50, 22, 54
• GCF of 82, 49, 79, 75
• GCF of 66, 28, 45, 79
• GCF of 77, 84, 84, 25

1. What is the GCF of 17, 42, 34, 15?

Answer: GCF of 17, 42, 34, 15 is 1.

2. How to Find the GCF of 17, 42, 34, 15

Answer: Greatest Common Factor(GCF) of 17, 42, 34, 15 = 1

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

Step 2: Then multiply all the prime factors GCF(17, 42, 34, 15) = 1.