Greatest Common Factor of 42, 15, 39, 6, 74

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

• Greatest Common Factor of 42, 15, 39, 6, 74 by common division method
• Greatest Common Factor of 42, 15, 39, 6, 74 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 15

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

1,3,5,15

Factors of 39

List of positive integer factors of 39 that divides 39 without a remainder.

1,3,13,39

Factors of 6

List of positive integer factors of 6 that divides 6 without a remainder.

1,2,3,6

Factors of 74

List of positive integer factors of 74 that divides 74 without a remainder.

1,2,37,74

Greatest Common Factor

We found the factors 42,15,39,6,74 . The biggest common factor number is the GCF number.
So the greatest common factor 42,15,39,6,74 is 1.

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

• GCF of 50, 15, 99, 5, 31
• GCF of 62, 15, 68, 4, 68
• GCF of 23, 66, 65, 4, 10
• GCF of 52, 13, 72, 8, 65
• GCF of 73, 54, 17, 7, 81

1. What is the GCF of 42, 15, 39, 6, 74?

Answer: GCF of 42, 15, 39, 6, 74 is 1.

2. How to Find the GCF of 42, 15, 39, 6, 74

Answer: Greatest Common Factor(GCF) of 42, 15, 39, 6, 74 = 1

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

Step 2: Then multiply all the prime factors GCF(42, 15, 39, 6, 74) = 1.