Greatest Common Factor of 345, 105, 645

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

• Greatest Common Factor of 345, 105, 645 by common division method
• Greatest Common Factor of 345, 105, 645 with matching the biggest common factor

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∴ So the GCF of the given numbers is 3 x 5 = 15

Factors of 345

List of positive integer factors of 345 that divides 345 without a remainder.

1,3,5,15,23,69,115,345

Factors of 105

List of positive integer factors of 105 that divides 105 without a remainder.

1,3,5,7,15,21,35,105

Factors of 645

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

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

Greatest Common Factor

We found the factors 345,105,645 . The biggest common factor number is the GCF number.
So the greatest common factor 345,105,645 is 15.

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

• GCF of 342, 136, 831
• GCF of 364, 942, 479
• GCF of 390, 451, 848
• GCF of 191, 725, 156
• GCF of 742, 651, 353

1. What is the GCF of 345, 105, 645?

Answer: GCF of 345, 105, 645 is 15.

2. How to Find the GCF of 345, 105, 645

Answer: Greatest Common Factor(GCF) of 345, 105, 645 = 15

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

Step 2: Then multiply all the prime factors GCF(345, 105, 645) = 15.