Greatest Common Factor of 21, 689, 923

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

• Greatest Common Factor of 21, 689, 923 by common division method
• Greatest Common Factor of 21, 689, 923 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 689

List of positive integer factors of 689 that divides 689 without a remainder.

1,13,53,689

Factors of 923

List of positive integer factors of 923 that divides 923 without a remainder.

1,13,71,923

Greatest Common Factor

We found the factors 21,689,923 . The biggest common factor number is the GCF number.
So the greatest common factor 21,689,923 is 1.

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

• GCF of 66, 982, 929
• GCF of 11, 369, 167
• GCF of 47, 107, 658
• GCF of 38, 708, 435
• GCF of 76, 688, 866

1. What is the GCF of 21, 689, 923?

Answer: GCF of 21, 689, 923 is 1.

2. How to Find the GCF of 21, 689, 923

Answer: Greatest Common Factor(GCF) of 21, 689, 923 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 689, 923) = 1.