Greatest Common Factor of 68, 21, 513

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

• Greatest Common Factor of 68, 21, 513 by common division method
• Greatest Common Factor of 68, 21, 513 with matching the biggest common factor

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∴ GCF of numbers is 1 because of no common factors present between them.

Factors of 68

List of positive integer factors of 68 that divides 68 without a remainder.

1,2,4,17,34,68

Factors of 21

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

1,3,7,21

Factors of 513

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

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

Greatest Common Factor

We found the factors 68,21,513 . The biggest common factor number is the GCF number.
So the greatest common factor 68,21,513 is 1.

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

• GCF of 40, 95, 533
• GCF of 99, 50, 451
• GCF of 69, 48, 598
• GCF of 50, 79, 653
• GCF of 93, 69, 249

1. What is the GCF of 68, 21, 513?

Answer: GCF of 68, 21, 513 is 1.

2. How to Find the GCF of 68, 21, 513

Answer: Greatest Common Factor(GCF) of 68, 21, 513 = 1

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

Step 2: Then multiply all the prime factors GCF(68, 21, 513) = 1.