Greatest Common Factor of 513, 621, 21

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

• Greatest Common Factor of 513, 621, 21 by common division method
• Greatest Common Factor of 513, 621, 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 513

List of positive integer factors of 513 that divides 513 without a remainder.

1,3,9,19,27,57,171,513

Factors of 621

List of positive integer factors of 621 that divides 621 without a remainder.

1,3,9,23,27,69,207,621

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 513,621,21 . The biggest common factor number is the GCF number.
So the greatest common factor 513,621,21 is 3.

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

• GCF of 436, 157, 31
• GCF of 195, 577, 74
• GCF of 636, 209, 84
• GCF of 615, 126, 27
• GCF of 550, 461, 36

1. What is the GCF of 513, 621, 21?

Answer: GCF of 513, 621, 21 is 3.

2. How to Find the GCF of 513, 621, 21

Answer: Greatest Common Factor(GCF) of 513, 621, 21 = 3

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

Step 2: Then multiply all the prime factors GCF(513, 621, 21) = 3.