Greatest Common Factor of 78, 45, 18, 27

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

• Greatest Common Factor of 78, 45, 18, 27 by common division method
• Greatest Common Factor of 78, 45, 18, 27 with matching the biggest common factor

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∴ So the GCF of the given numbers is 3 = 3

Factors of 78

List of positive integer factors of 78 that divides 78 without a remainder.

1,2,3,6,13,26,39,78

Factors of 45

List of positive integer factors of 45 that divides 45 without a remainder.

1,3,5,9,15,45

Factors of 18

List of positive integer factors of 18 that divides 18 without a remainder.

1,2,3,6,9,18

Factors of 27

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

1,3,9,27

Greatest Common Factor

We found the factors 78,45,18,27 . The biggest common factor number is the GCF number.
So the greatest common factor 78,45,18,27 is 3.

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

• GCF of 21, 66, 45, 33
• GCF of 32, 67, 12, 99
• GCF of 61, 14, 46, 78
• GCF of 85, 76, 90, 67
• GCF of 21, 95, 83, 11

1. What is the GCF of 78, 45, 18, 27?

Answer: GCF of 78, 45, 18, 27 is 3.

2. How to Find the GCF of 78, 45, 18, 27

Answer: Greatest Common Factor(GCF) of 78, 45, 18, 27 = 3

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

Step 2: Then multiply all the prime factors GCF(78, 45, 18, 27) = 3.