Greatest Common Factor of 21, 253, 493

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

• Greatest Common Factor of 21, 253, 493 by common division method
• Greatest Common Factor of 21, 253, 493 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 21

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

1,3,7,21

Factors of 253

List of positive integer factors of 253 that divides 253 without a remainder.

1,11,23,253

Factors of 493

List of positive integer factors of 493 that divides 493 without a remainder.

1,17,29,493

Greatest Common Factor

We found the factors 21,253,493 . The biggest common factor number is the GCF number.
So the greatest common factor 21,253,493 is 1.

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

• GCF of 80, 465, 665
• GCF of 85, 423, 269
• GCF of 62, 454, 726
• GCF of 17, 545, 898
• GCF of 91, 985, 415

1. What is the GCF of 21, 253, 493?

Answer: GCF of 21, 253, 493 is 1.

2. How to Find the GCF of 21, 253, 493

Answer: Greatest Common Factor(GCF) of 21, 253, 493 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 253, 493) = 1.