Greatest Common Factor of 28, 17, 423

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

• Greatest Common Factor of 28, 17, 423 by common division method
• Greatest Common Factor of 28, 17, 423 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 17

List of positive integer factors of 17 that divides 17 without a remainder.

1,17

Factors of 423

List of positive integer factors of 423 that divides 423 without a remainder.

1,3,9,47,141,423

Greatest Common Factor

We found the factors 28,17,423 . The biggest common factor number is the GCF number.
So the greatest common factor 28,17,423 is 1.

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

• GCF of 81, 88, 449
• GCF of 76, 12, 536
• GCF of 67, 67, 985
• GCF of 99, 86, 446
• GCF of 15, 51, 209

1. What is the GCF of 28, 17, 423?

Answer: GCF of 28, 17, 423 is 1.

2. How to Find the GCF of 28, 17, 423

Answer: Greatest Common Factor(GCF) of 28, 17, 423 = 1

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

Step 2: Then multiply all the prime factors GCF(28, 17, 423) = 1.