Greatest Common Factor of 21, 351, 423

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

• Greatest Common Factor of 21, 351, 423 by common division method
• Greatest Common Factor of 21, 351, 423 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 351

List of positive integer factors of 351 that divides 351 without a remainder.

1,3,9,13,27,39,117,351

Factors of 423

List of positive integer factors of 423 that divides 423 without a remainder.

1,3,9,47,141,423

Greatest Common Factor

We found the factors 21,351,423 . The biggest common factor number is the GCF number.
So the greatest common factor 21,351,423 is 3.

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

• GCF of 64, 194, 221
• GCF of 43, 673, 178
• GCF of 84, 481, 473
• GCF of 49, 516, 492
• GCF of 89, 497, 292

1. What is the GCF of 21, 351, 423?

Answer: GCF of 21, 351, 423 is 3.

2. How to Find the GCF of 21, 351, 423

Answer: Greatest Common Factor(GCF) of 21, 351, 423 = 3

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

Step 2: Then multiply all the prime factors GCF(21, 351, 423) = 3.