Greatest Common Factor of 23, 80, 28, 71

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

• Greatest Common Factor of 23, 80, 28, 71 by common division method
• Greatest Common Factor of 23, 80, 28, 71 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 23

List of positive integer factors of 23 that divides 23 without a remainder.

1,23

Factors of 80

List of positive integer factors of 80 that divides 80 without a remainder.

1,2,4,5,8,10,16,20,40,80

Factors of 28

List of positive integer factors of 28 that divides 28 without a remainder.

1,2,4,7,14,28

Factors of 71

List of positive integer factors of 71 that divides 71 without a remainder.

1,71

Greatest Common Factor

We found the factors 23,80,28,71 . The biggest common factor number is the GCF number.
So the greatest common factor 23,80,28,71 is 1.

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

• GCF of 90, 61, 70, 40
• GCF of 85, 26, 51, 26
• GCF of 90, 16, 21, 43
• GCF of 16, 12, 73, 75
• GCF of 56, 78, 72, 34

1. What is the GCF of 23, 80, 28, 71?

Answer: GCF of 23, 80, 28, 71 is 1.

2. How to Find the GCF of 23, 80, 28, 71

Answer: Greatest Common Factor(GCF) of 23, 80, 28, 71 = 1

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

Step 2: Then multiply all the prime factors GCF(23, 80, 28, 71) = 1.