Greatest Common Factor of 21, 100, 872

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

• Greatest Common Factor of 21, 100, 872 by common division method
• Greatest Common Factor of 21, 100, 872 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 100

List of positive integer factors of 100 that divides 100 without a remainder.

1,2,4,5,10,20,25,50,100

Factors of 872

List of positive integer factors of 872 that divides 872 without a remainder.

1,2,4,8,109,218,436,872

Greatest Common Factor

We found the factors 21,100,872 . The biggest common factor number is the GCF number.
So the greatest common factor 21,100,872 is 1.

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

• GCF of 15, 853, 470
• GCF of 83, 824, 581
• GCF of 94, 927, 664
• GCF of 65, 919, 698
• GCF of 97, 925, 712

1. What is the GCF of 21, 100, 872?

Answer: GCF of 21, 100, 872 is 1.

2. How to Find the GCF of 21, 100, 872

Answer: Greatest Common Factor(GCF) of 21, 100, 872 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 100, 872) = 1.