Greatest Common Factor of 21, 51, 459

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

• Greatest Common Factor of 21, 51, 459 by common division method
• Greatest Common Factor of 21, 51, 459 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 51

List of positive integer factors of 51 that divides 51 without a remainder.

1,3,17,51

Factors of 459

List of positive integer factors of 459 that divides 459 without a remainder.

1,3,9,17,27,51,153,459

Greatest Common Factor

We found the factors 21,51,459 . The biggest common factor number is the GCF number.
So the greatest common factor 21,51,459 is 3.

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

• GCF of 55, 85, 623
• GCF of 57, 54, 320
• GCF of 80, 88, 436
• GCF of 40, 55, 645
• GCF of 98, 42, 350

1. What is the GCF of 21, 51, 459?

Answer: GCF of 21, 51, 459 is 3.

2. How to Find the GCF of 21, 51, 459

Answer: Greatest Common Factor(GCF) of 21, 51, 459 = 3

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

Step 2: Then multiply all the prime factors GCF(21, 51, 459) = 3.