Greatest Common Factor of 21, 28, 11, 759

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

• Greatest Common Factor of 21, 28, 11, 759 by common division method
• Greatest Common Factor of 21, 28, 11, 759 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 21

List of positive integer factors of 21 that divides 21 without a remainder.

1,3,7,21

Factors of 28

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

1,2,4,7,14,28

Factors of 11

List of positive integer factors of 11 that divides 11 without a remainder.

1,11

Factors of 759

List of positive integer factors of 759 that divides 759 without a remainder.

1,3,11,23,33,69,253,759

Greatest Common Factor

We found the factors 21,28,11,759 . The biggest common factor number is the GCF number.
So the greatest common factor 21,28,11,759 is 1.

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

• GCF of 72, 13, 56, 238
• GCF of 44, 47, 57, 270
• GCF of 18, 19, 79, 408
• GCF of 54, 87, 97, 429
• GCF of 87, 71, 73, 208

1. What is the GCF of 21, 28, 11, 759?

Answer: GCF of 21, 28, 11, 759 is 1.

2. How to Find the GCF of 21, 28, 11, 759

Answer: Greatest Common Factor(GCF) of 21, 28, 11, 759 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 28, 11, 759) = 1.