Greatest Common Factor of 30, 51, 68, 39

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

• Greatest Common Factor of 30, 51, 68, 39 by common division method
• Greatest Common Factor of 30, 51, 68, 39 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 30

List of positive integer factors of 30 that divides 30 without a remainder.

1,2,3,5,6,10,15,30

Factors of 51

List of positive integer factors of 51 that divides 51 without a remainder.

1,3,17,51

Factors of 68

List of positive integer factors of 68 that divides 68 without a remainder.

1,2,4,17,34,68

Factors of 39

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

1,3,13,39

Greatest Common Factor

We found the factors 30,51,68,39 . The biggest common factor number is the GCF number.
So the greatest common factor 30,51,68,39 is 1.

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

• GCF of 86, 40, 69, 96
• GCF of 34, 99, 61, 19
• GCF of 15, 37, 18, 80
• GCF of 52, 72, 28, 11
• GCF of 30, 47, 22, 52

1. What is the GCF of 30, 51, 68, 39?

Answer: GCF of 30, 51, 68, 39 is 1.

2. How to Find the GCF of 30, 51, 68, 39

Answer: Greatest Common Factor(GCF) of 30, 51, 68, 39 = 1

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

Step 2: Then multiply all the prime factors GCF(30, 51, 68, 39) = 1.