Greatest Common Factor of 645, 642, 615

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

• Greatest Common Factor of 645, 642, 615 by common division method
• Greatest Common Factor of 645, 642, 615 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 642

List of positive integer factors of 642 that divides 642 without a remainder.

1,2,3,6,107,214,321,642

Factors of 615

List of positive integer factors of 615 that divides 615 without a remainder.

1,3,5,15,41,123,205,615

Greatest Common Factor

We found the factors 645,642,615 . The biggest common factor number is the GCF number.
So the greatest common factor 645,642,615 is 3.

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

• GCF of 885, 819, 899
• GCF of 885, 273, 473
• GCF of 927, 611, 220
• GCF of 567, 572, 540
• GCF of 433, 911, 629

1. What is the GCF of 645, 642, 615?

Answer: GCF of 645, 642, 615 is 3.

2. How to Find the GCF of 645, 642, 615

Answer: Greatest Common Factor(GCF) of 645, 642, 615 = 3

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

Step 2: Then multiply all the prime factors GCF(645, 642, 615) = 3.