Greatest Common Factor of 28, 91, 71, 609

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

• Greatest Common Factor of 28, 91, 71, 609 by common division method
• Greatest Common Factor of 28, 91, 71, 609 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 28

List of positive integer factors of 28 that divides 28 without a remainder.

1,2,4,7,14,28

Factors of 91

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

1,7,13,91

Factors of 71

List of positive integer factors of 71 that divides 71 without a remainder.

1,71

Factors of 609

List of positive integer factors of 609 that divides 609 without a remainder.

1,3,7,21,29,87,203,609

Greatest Common Factor

We found the factors 28,91,71,609 . The biggest common factor number is the GCF number.
So the greatest common factor 28,91,71,609 is 1.

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

• GCF of 98, 93, 25, 530
• GCF of 31, 87, 61, 887
• GCF of 76, 39, 61, 860
• GCF of 19, 54, 86, 946
• GCF of 42, 59, 85, 551

1. What is the GCF of 28, 91, 71, 609?

Answer: GCF of 28, 91, 71, 609 is 1.

2. How to Find the GCF of 28, 91, 71, 609

Answer: Greatest Common Factor(GCF) of 28, 91, 71, 609 = 1

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

Step 2: Then multiply all the prime factors GCF(28, 91, 71, 609) = 1.