Greatest Common Factor of 42, 61, 30, 540

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

• Greatest Common Factor of 42, 61, 30, 540 by common division method
• Greatest Common Factor of 42, 61, 30, 540 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 61

List of positive integer factors of 61 that divides 61 without a remainder.

1,61

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 540

List of positive integer factors of 540 that divides 540 without a remainder.

1,2,3,4,5,6,9,10,12,15,18,20,27,30,36,45,54,60,90,108,135,180,270,540

Greatest Common Factor

We found the factors 42,61,30,540 . The biggest common factor number is the GCF number.
So the greatest common factor 42,61,30,540 is 1.

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

• GCF of 51, 53, 81, 936
• GCF of 78, 31, 87, 855
• GCF of 50, 11, 90, 456
• GCF of 52, 67, 81, 384
• GCF of 92, 53, 81, 627

1. What is the GCF of 42, 61, 30, 540?

Answer: GCF of 42, 61, 30, 540 is 1.

2. How to Find the GCF of 42, 61, 30, 540

Answer: Greatest Common Factor(GCF) of 42, 61, 30, 540 = 1

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

Step 2: Then multiply all the prime factors GCF(42, 61, 30, 540) = 1.