Greatest Common Factor of 45, 42, 81, 915

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

• Greatest Common Factor of 45, 42, 81, 915 by common division method
• Greatest Common Factor of 45, 42, 81, 915 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 45

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

1,3,5,9,15,45

Factors of 42

List of positive integer factors of 42 that divides 42 without a remainder.

1,2,3,6,7,14,21,42

Factors of 81

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

1,3,9,27,81

Factors of 915

List of positive integer factors of 915 that divides 915 without a remainder.

1,3,5,15,61,183,305,915

Greatest Common Factor

We found the factors 45,42,81,915 . The biggest common factor number is the GCF number.
So the greatest common factor 45,42,81,915 is 3.

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

• GCF of 67, 64, 73, 247
• GCF of 37, 24, 47, 149
• GCF of 20, 97, 60, 532
• GCF of 25, 90, 36, 981
• GCF of 23, 38, 27, 342

1. What is the GCF of 45, 42, 81, 915?

Answer: GCF of 45, 42, 81, 915 is 3.

2. How to Find the GCF of 45, 42, 81, 915

Answer: Greatest Common Factor(GCF) of 45, 42, 81, 915 = 3

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

Step 2: Then multiply all the prime factors GCF(45, 42, 81, 915) = 3.