Greatest Common Factor of 78, 30, 81, 189

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

• Greatest Common Factor of 78, 30, 81, 189 by common division method
• Greatest Common Factor of 78, 30, 81, 189 with matching the biggest common factor

Maximum 4 Number can be enter but you can reset

∴ 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 30

List of positive integer factors of 30 that divides 30 without a remainder.

1,2,3,5,6,10,15,30

Factors of 81

List of positive integer factors of 81 that divides 81 without a remainder.

1,3,9,27,81

Factors of 189

List of positive integer factors of 189 that divides 189 without a remainder.

1,3,7,9,21,27,63,189

Greatest Common Factor

We found the factors 78,30,81,189 . The biggest common factor number is the GCF number.
So the greatest common factor 78,30,81,189 is 3.

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

• GCF of 83, 18, 39, 544
• GCF of 72, 68, 98, 747
• GCF of 51, 39, 42, 559
• GCF of 31, 37, 85, 733
• GCF of 88, 52, 35, 681

1. What is the GCF of 78, 30, 81, 189?

Answer: GCF of 78, 30, 81, 189 is 3.

2. How to Find the GCF of 78, 30, 81, 189

Answer: Greatest Common Factor(GCF) of 78, 30, 81, 189 = 3

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

Step 2: Then multiply all the prime factors GCF(78, 30, 81, 189) = 3.