Greatest Common Factor of 28, 209, 399

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

• Greatest Common Factor of 28, 209, 399 by common division method
• Greatest Common Factor of 28, 209, 399 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 209

List of positive integer factors of 209 that divides 209 without a remainder.

1,11,19,209

Factors of 399

List of positive integer factors of 399 that divides 399 without a remainder.

1,3,7,19,21,57,133,399

Greatest Common Factor

We found the factors 28,209,399 . The biggest common factor number is the GCF number.
So the greatest common factor 28,209,399 is 1.

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

• GCF of 48, 590, 714
• GCF of 82, 381, 867
• GCF of 96, 594, 397
• GCF of 51, 206, 861
• GCF of 59, 741, 671

1. What is the GCF of 28, 209, 399?

Answer: GCF of 28, 209, 399 is 1.

2. How to Find the GCF of 28, 209, 399

Answer: Greatest Common Factor(GCF) of 28, 209, 399 = 1

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

Step 2: Then multiply all the prime factors GCF(28, 209, 399) = 1.