Greatest Common Factor of 21, 12, 909

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

• Greatest Common Factor of 21, 12, 909 by common division method
• Greatest Common Factor of 21, 12, 909 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 12

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

1,2,3,4,6,12

Factors of 909

List of positive integer factors of 909 that divides 909 without a remainder.

1,3,9,101,303,909

Greatest Common Factor

We found the factors 21,12,909 . The biggest common factor number is the GCF number.
So the greatest common factor 21,12,909 is 3.

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

• GCF of 96, 68, 837
• GCF of 84, 51, 126
• GCF of 72, 52, 576
• GCF of 94, 42, 544
• GCF of 78, 29, 333

1. What is the GCF of 21, 12, 909?

Answer: GCF of 21, 12, 909 is 3.

2. How to Find the GCF of 21, 12, 909

Answer: Greatest Common Factor(GCF) of 21, 12, 909 = 3

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

Step 2: Then multiply all the prime factors GCF(21, 12, 909) = 3.