Greatest Common Factor of 663, 642, 780

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

• Greatest Common Factor of 663, 642, 780 by common division method
• Greatest Common Factor of 663, 642, 780 with matching the biggest common factor

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

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 642

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

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

Factors of 780

List of positive integer factors of 780 that divides 780 without a remainder.

1,2,3,4,5,6,10,12,13,15,20,26,30,39,52,60,65,78,130,156,195,260,390,780

Greatest Common Factor

We found the factors 663,642,780 . The biggest common factor number is the GCF number.
So the greatest common factor 663,642,780 is 3.

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

• GCF of 576, 600, 464
• GCF of 738, 394, 339
• GCF of 694, 321, 471
• GCF of 331, 617, 101
• GCF of 535, 449, 454

1. What is the GCF of 663, 642, 780?

Answer: GCF of 663, 642, 780 is 3.

2. How to Find the GCF of 663, 642, 780

Answer: Greatest Common Factor(GCF) of 663, 642, 780 = 3

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

Step 2: Then multiply all the prime factors GCF(663, 642, 780) = 3.