Greatest Common Factor of 42, 39, 54, 91

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

• Greatest Common Factor of 42, 39, 54, 91 by common division method
• Greatest Common Factor of 42, 39, 54, 91 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 39

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

1,3,13,39

Factors of 54

List of positive integer factors of 54 that divides 54 without a remainder.

1,2,3,6,9,18,27,54

Factors of 91

List of positive integer factors of 91 that divides 91 without a remainder.

1,7,13,91

Greatest Common Factor

We found the factors 42,39,54,91 . The biggest common factor number is the GCF number.
So the greatest common factor 42,39,54,91 is 1.

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

• GCF of 38, 44, 47, 23
• GCF of 16, 95, 43, 78
• GCF of 68, 80, 33, 25
• GCF of 91, 98, 33, 13
• GCF of 58, 70, 99, 12

1. What is the GCF of 42, 39, 54, 91?

Answer: GCF of 42, 39, 54, 91 is 1.

2. How to Find the GCF of 42, 39, 54, 91

Answer: Greatest Common Factor(GCF) of 42, 39, 54, 91 = 1

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

Step 2: Then multiply all the prime factors GCF(42, 39, 54, 91) = 1.