Greatest Common Factor of 645, 663, 165

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

• Greatest Common Factor of 645, 663, 165 by common division method
• Greatest Common Factor of 645, 663, 165 with matching the biggest common factor

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∴ So the GCF of the given numbers is 3 = 3

Factors of 645

List of positive integer factors of 645 that divides 645 without a remainder.

1,3,5,15,43,129,215,645

Factors of 663

List of positive integer factors of 663 that divides 663 without a remainder.

1,3,13,17,39,51,221,663

Factors of 165

List of positive integer factors of 165 that divides 165 without a remainder.

1,3,5,11,15,33,55,165

Greatest Common Factor

We found the factors 645,663,165 . The biggest common factor number is the GCF number.
So the greatest common factor 645,663,165 is 3.

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

• GCF of 173, 211, 733
• GCF of 912, 746, 549
• GCF of 428, 682, 831
• GCF of 338, 489, 509
• GCF of 760, 183, 364

1. What is the GCF of 645, 663, 165?

Answer: GCF of 645, 663, 165 is 3.

2. How to Find the GCF of 645, 663, 165

Answer: Greatest Common Factor(GCF) of 645, 663, 165 = 3

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

Step 2: Then multiply all the prime factors GCF(645, 663, 165) = 3.