Greatest Common Factor of 479, 520, 21

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

• Greatest Common Factor of 479, 520, 21 by common division method
• Greatest Common Factor of 479, 520, 21 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 479

List of positive integer factors of 479 that divides 479 without a remainder.

1,479

Factors of 520

List of positive integer factors of 520 that divides 520 without a remainder.

1,2,4,5,8,10,13,20,26,40,52,65,104,130,260,520

Factors of 21

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

1,3,7,21

Greatest Common Factor

We found the factors 479,520,21 . The biggest common factor number is the GCF number.
So the greatest common factor 479,520,21 is 1.

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

• GCF of 178, 206, 55
• GCF of 126, 420, 24
• GCF of 235, 396, 76
• GCF of 108, 383, 22
• GCF of 679, 896, 99

1. What is the GCF of 479, 520, 21?

Answer: GCF of 479, 520, 21 is 1.

2. How to Find the GCF of 479, 520, 21

Answer: Greatest Common Factor(GCF) of 479, 520, 21 = 1

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

Step 2: Then multiply all the prime factors GCF(479, 520, 21) = 1.