Greatest Common Factor of 15, 168, 645

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

• Greatest Common Factor of 15, 168, 645 by common division method
• Greatest Common Factor of 15, 168, 645 with matching the biggest common factor

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

Factors of 15

List of positive integer factors of 15 that divides 15 without a remainder.

1,3,5,15

Factors of 168

List of positive integer factors of 168 that divides 168 without a remainder.

1,2,3,4,6,7,8,12,14,21,24,28,42,56,84,168

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 15,168,645 . The biggest common factor number is the GCF number.
So the greatest common factor 15,168,645 is 3.

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

• GCF of 35, 849, 674
• GCF of 89, 653, 197
• GCF of 36, 439, 755
• GCF of 96, 371, 413
• GCF of 38, 787, 691

1. What is the GCF of 15, 168, 645?

Answer: GCF of 15, 168, 645 is 3.

2. How to Find the GCF of 15, 168, 645

Answer: Greatest Common Factor(GCF) of 15, 168, 645 = 3

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

Step 2: Then multiply all the prime factors GCF(15, 168, 645) = 3.