Greatest Common Factor of 21, 63, 99, 117

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

• Greatest Common Factor of 21, 63, 99, 117 by common division method
• Greatest Common Factor of 21, 63, 99, 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 21

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

1,3,7,21

Factors of 63

List of positive integer factors of 63 that divides 63 without a remainder.

1,3,7,9,21,63

Factors of 99

List of positive integer factors of 99 that divides 99 without a remainder.

1,3,9,11,33,99

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 21,63,99,117 . The biggest common factor number is the GCF number.
So the greatest common factor 21,63,99,117 is 3.

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

• GCF of 79, 33, 42, 350
• GCF of 67, 11, 86, 283
• GCF of 42, 96, 87, 852
• GCF of 49, 49, 36, 425
• GCF of 13, 27, 35, 106

1. What is the GCF of 21, 63, 99, 117?

Answer: GCF of 21, 63, 99, 117 is 3.

2. How to Find the GCF of 21, 63, 99, 117

Answer: Greatest Common Factor(GCF) of 21, 63, 99, 117 = 3

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

Step 2: Then multiply all the prime factors GCF(21, 63, 99, 117) = 3.