Greatest Common Factor of 90, 15, 78, 66

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

• Greatest Common Factor of 90, 15, 78, 66 by common division method
• Greatest Common Factor of 90, 15, 78, 66 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 90

List of positive integer factors of 90 that divides 90 without a remainder.

1,2,3,5,6,9,10,15,18,30,45,90

Factors of 15

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

1,3,5,15

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 66

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

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

Greatest Common Factor

We found the factors 90,15,78,66 . The biggest common factor number is the GCF number.
So the greatest common factor 90,15,78,66 is 3.

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

• GCF of 74, 98, 91, 54
• GCF of 64, 42, 61, 79
• GCF of 62, 73, 92, 50
• GCF of 51, 50, 74, 30
• GCF of 22, 10, 91, 94

1. What is the GCF of 90, 15, 78, 66?

Answer: GCF of 90, 15, 78, 66 is 3.

2. How to Find the GCF of 90, 15, 78, 66

Answer: Greatest Common Factor(GCF) of 90, 15, 78, 66 = 3

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

Step 2: Then multiply all the prime factors GCF(90, 15, 78, 66) = 3.