Greatest Common Factor of 393, 123, 21

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

• Greatest Common Factor of 393, 123, 21 by common division method
• Greatest Common Factor of 393, 123, 21 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 393

List of positive integer factors of 393 that divides 393 without a remainder.

1,3,131,393

Factors of 123

List of positive integer factors of 123 that divides 123 without a remainder.

1,3,41,123

Factors of 21

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

1,3,7,21

Greatest Common Factor

We found the factors 393,123,21 . The biggest common factor number is the GCF number.
So the greatest common factor 393,123,21 is 3.

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

• GCF of 302, 106, 14
• GCF of 761, 218, 80
• GCF of 111, 996, 85
• GCF of 605, 782, 98
• GCF of 281, 282, 77

1. What is the GCF of 393, 123, 21?

Answer: GCF of 393, 123, 21 is 3.

2. How to Find the GCF of 393, 123, 21

Answer: Greatest Common Factor(GCF) of 393, 123, 21 = 3

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

Step 2: Then multiply all the prime factors GCF(393, 123, 21) = 3.