Greatest Common Factor of 80, 20, 643

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

• Greatest Common Factor of 80, 20, 643 by common division method
• Greatest Common Factor of 80, 20, 643 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 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 20

List of positive integer factors of 20 that divides 20 without a remainder.

1,2,4,5,10,20

Factors of 643

List of positive integer factors of 643 that divides 643 without a remainder.

1,643

Greatest Common Factor

We found the factors 80,20,643 . The biggest common factor number is the GCF number.
So the greatest common factor 80,20,643 is 1.

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

• GCF of 14, 84, 248
• GCF of 30, 13, 300
• GCF of 75, 24, 678
• GCF of 22, 30, 719
• GCF of 55, 73, 502

1. What is the GCF of 80, 20, 643?

Answer: GCF of 80, 20, 643 is 1.

2. How to Find the GCF of 80, 20, 643

Answer: Greatest Common Factor(GCF) of 80, 20, 643 = 1

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

Step 2: Then multiply all the prime factors GCF(80, 20, 643) = 1.