Greatest Common Factor of 27, 80, 15, 642

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

• Greatest Common Factor of 27, 80, 15, 642 by common division method
• Greatest Common Factor of 27, 80, 15, 642 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 27

List of positive integer factors of 27 that divides 27 without a remainder.

1,3,9,27

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 15

List of positive integer factors of 15 that divides 15 without a remainder.

1,3,5,15

Factors of 642

List of positive integer factors of 642 that divides 642 without a remainder.

1,2,3,6,107,214,321,642

Greatest Common Factor

We found the factors 27,80,15,642 . The biggest common factor number is the GCF number.
So the greatest common factor 27,80,15,642 is 1.

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

• GCF of 50, 79, 37, 484
• GCF of 52, 79, 94, 705
• GCF of 46, 12, 23, 593
• GCF of 63, 10, 16, 566
• GCF of 20, 91, 97, 143

1. What is the GCF of 27, 80, 15, 642?

Answer: GCF of 27, 80, 15, 642 is 1.

2. How to Find the GCF of 27, 80, 15, 642

Answer: Greatest Common Factor(GCF) of 27, 80, 15, 642 = 1

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

Step 2: Then multiply all the prime factors GCF(27, 80, 15, 642) = 1.