Greatest Common Factor of 27, 68, 66, 39, 640

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

• Greatest Common Factor of 27, 68, 66, 39, 640 by common division method
• Greatest Common Factor of 27, 68, 66, 39, 640 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 68

List of positive integer factors of 68 that divides 68 without a remainder.

1,2,4,17,34,68

Factors of 66

List of positive integer factors of 66 that divides 66 without a remainder.

1,2,3,6,11,22,33,66

Factors of 39

List of positive integer factors of 39 that divides 39 without a remainder.

1,3,13,39

Factors of 640

List of positive integer factors of 640 that divides 640 without a remainder.

1,2,4,5,8,10,16,20,32,40,64,80,128,160,320,640

Greatest Common Factor

We found the factors 27,68,66,39,640 . The biggest common factor number is the GCF number.
So the greatest common factor 27,68,66,39,640 is 1.

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

• GCF of 21, 52, 30, 88, 198
• GCF of 52, 62, 50, 93, 441
• GCF of 16, 25, 61, 95, 251
• GCF of 86, 94, 79, 51, 364
• GCF of 89, 65, 69, 95, 581

1. What is the GCF of 27, 68, 66, 39, 640?

Answer: GCF of 27, 68, 66, 39, 640 is 1.

2. How to Find the GCF of 27, 68, 66, 39, 640

Answer: Greatest Common Factor(GCF) of 27, 68, 66, 39, 640 = 1

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

Step 2: Then multiply all the prime factors GCF(27, 68, 66, 39, 640) = 1.