Greatest Common Factor of 45, 12, 21, 117

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

• Greatest Common Factor of 45, 12, 21, 117 by common division method
• Greatest Common Factor of 45, 12, 21, 117 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 12

List of positive integer factors of 12 that divides 12 without a remainder.

1,2,3,4,6,12

Factors of 21

List of positive integer factors of 21 that divides 21 without a remainder.

1,3,7,21

Factors of 117

List of positive integer factors of 117 that divides 117 without a remainder.

1,3,9,13,39,117

Greatest Common Factor

We found the factors 45,12,21,117 . The biggest common factor number is the GCF number.
So the greatest common factor 45,12,21,117 is 3.

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

• GCF of 41, 93, 83, 144
• GCF of 50, 71, 18, 943
• GCF of 22, 88, 36, 779
• GCF of 30, 20, 32, 819
• GCF of 83, 72, 48, 281

1. What is the GCF of 45, 12, 21, 117?

Answer: GCF of 45, 12, 21, 117 is 3.

2. How to Find the GCF of 45, 12, 21, 117

Answer: Greatest Common Factor(GCF) of 45, 12, 21, 117 = 3

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

Step 2: Then multiply all the prime factors GCF(45, 12, 21, 117) = 3.