Greatest Common Factor of 43, 40, 47, 2, 21

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

• Greatest Common Factor of 43, 40, 47, 2, 21 by common division method
• Greatest Common Factor of 43, 40, 47, 2, 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 43

List of positive integer factors of 43 that divides 43 without a remainder.

1,43

Factors of 40

List of positive integer factors of 40 that divides 40 without a remainder.

1,2,4,5,8,10,20,40

Factors of 47

List of positive integer factors of 47 that divides 47 without a remainder.

1,47

Factors of 2

List of positive integer factors of 2 that divides 2 without a remainder.

1,2

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 43,40,47,2,21 . The biggest common factor number is the GCF number.
So the greatest common factor 43,40,47,2,21 is 1.

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

• GCF of 16, 42, 15, 2, 58
• GCF of 67, 98, 72, 9, 91
• GCF of 18, 95, 82, 9, 70
• GCF of 17, 57, 16, 1, 65
• GCF of 90, 71, 88, 3, 19

1. What is the GCF of 43, 40, 47, 2, 21?

Answer: GCF of 43, 40, 47, 2, 21 is 1.

2. How to Find the GCF of 43, 40, 47, 2, 21

Answer: Greatest Common Factor(GCF) of 43, 40, 47, 2, 21 = 1

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

Step 2: Then multiply all the prime factors GCF(43, 40, 47, 2, 21) = 1.