Greatest Common Factor of 21, 10, 51, 667

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

• Greatest Common Factor of 21, 10, 51, 667 by common division method
• Greatest Common Factor of 21, 10, 51, 667 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 10

List of positive integer factors of 10 that divides 10 without a remainder.

1,2,5,10

Factors of 51

List of positive integer factors of 51 that divides 51 without a remainder.

1,3,17,51

Factors of 667

List of positive integer factors of 667 that divides 667 without a remainder.

1,23,29,667

Greatest Common Factor

We found the factors 21,10,51,667 . The biggest common factor number is the GCF number.
So the greatest common factor 21,10,51,667 is 1.

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

• GCF of 24, 57, 22, 223
• GCF of 47, 14, 77, 515
• GCF of 68, 29, 25, 700
• GCF of 58, 93, 13, 641
• GCF of 98, 79, 81, 398

1. What is the GCF of 21, 10, 51, 667?

Answer: GCF of 21, 10, 51, 667 is 1.

2. How to Find the GCF of 21, 10, 51, 667

Answer: Greatest Common Factor(GCF) of 21, 10, 51, 667 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 10, 51, 667) = 1.