Greatest Common Factor of 990, 378, 647, 645

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

• Greatest Common Factor of 990, 378, 647, 645 by common division method
• Greatest Common Factor of 990, 378, 647, 645 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 990

List of positive integer factors of 990 that divides 990 without a remainder.

1,2,3,5,6,9,10,11,15,18,22,30,33,45,55,66,90,99,110,165,198,330,495,990

Factors of 378

List of positive integer factors of 378 that divides 378 without a remainder.

1,2,3,6,7,9,14,18,21,27,42,54,63,126,189,378

Factors of 647

List of positive integer factors of 647 that divides 647 without a remainder.

1,647

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 990,378,647,645 . The biggest common factor number is the GCF number.
So the greatest common factor 990,378,647,645 is 1.

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

• GCF of 313, 992, 369, 939
• GCF of 918, 245, 630, 523
• GCF of 183, 681, 969, 178
• GCF of 416, 266, 805, 186
• GCF of 368, 304, 819, 529

1. What is the GCF of 990, 378, 647, 645?

Answer: GCF of 990, 378, 647, 645 is 1.

2. How to Find the GCF of 990, 378, 647, 645

Answer: Greatest Common Factor(GCF) of 990, 378, 647, 645 = 1

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

Step 2: Then multiply all the prime factors GCF(990, 378, 647, 645) = 1.