Greatest Common Factor of 42, 55, 57, 321

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

• Greatest Common Factor of 42, 55, 57, 321 by common division method
• Greatest Common Factor of 42, 55, 57, 321 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 55

List of positive integer factors of 55 that divides 55 without a remainder.

1,5,11,55

Factors of 57

List of positive integer factors of 57 that divides 57 without a remainder.

1,3,19,57

Factors of 321

List of positive integer factors of 321 that divides 321 without a remainder.

1,3,107,321

Greatest Common Factor

We found the factors 42,55,57,321 . The biggest common factor number is the GCF number.
So the greatest common factor 42,55,57,321 is 1.

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

• GCF of 86, 39, 69, 512
• GCF of 21, 81, 96, 715
• GCF of 74, 70, 67, 830
• GCF of 65, 76, 47, 749
• GCF of 98, 52, 96, 688

1. What is the GCF of 42, 55, 57, 321?

Answer: GCF of 42, 55, 57, 321 is 1.

2. How to Find the GCF of 42, 55, 57, 321

Answer: Greatest Common Factor(GCF) of 42, 55, 57, 321 = 1

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

Step 2: Then multiply all the prime factors GCF(42, 55, 57, 321) = 1.