Greatest Common Factor of 42, 56, 821

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

• Greatest Common Factor of 42, 56, 821 by common division method
• Greatest Common Factor of 42, 56, 821 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 56

List of positive integer factors of 56 that divides 56 without a remainder.

1,2,4,7,8,14,28,56

Factors of 821

List of positive integer factors of 821 that divides 821 without a remainder.

1,821

Greatest Common Factor

We found the factors 42,56,821 . The biggest common factor number is the GCF number.
So the greatest common factor 42,56,821 is 1.

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

• GCF of 35, 38, 442
• GCF of 39, 28, 693
• GCF of 72, 15, 950
• GCF of 94, 73, 555
• GCF of 38, 13, 851

1. What is the GCF of 42, 56, 821?

Answer: GCF of 42, 56, 821 is 1.

2. How to Find the GCF of 42, 56, 821

Answer: Greatest Common Factor(GCF) of 42, 56, 821 = 1

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

Step 2: Then multiply all the prime factors GCF(42, 56, 821) = 1.