Greatest Common Factor of 660, 747, 420

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

• Greatest Common Factor of 660, 747, 420 by common division method
• Greatest Common Factor of 660, 747, 420 with matching the biggest common factor

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

Factors of 660

List of positive integer factors of 660 that divides 660 without a remainder.

1,2,3,4,5,6,10,11,12,15,20,22,30,33,44,55,60,66,110,132,165,220,330,660

Factors of 747

List of positive integer factors of 747 that divides 747 without a remainder.

1,3,9,83,249,747

Factors of 420

List of positive integer factors of 420 that divides 420 without a remainder.

1,2,3,4,5,6,7,10,12,14,15,20,21,28,30,35,42,60,70,84,105,140,210,420

Greatest Common Factor

We found the factors 660,747,420 . The biggest common factor number is the GCF number.
So the greatest common factor 660,747,420 is 3.

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

• GCF of 805, 883, 995
• GCF of 706, 584, 922
• GCF of 423, 983, 667
• GCF of 857, 105, 205
• GCF of 145, 295, 757

1. What is the GCF of 660, 747, 420?

Answer: GCF of 660, 747, 420 is 3.

2. How to Find the GCF of 660, 747, 420

Answer: Greatest Common Factor(GCF) of 660, 747, 420 = 3

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

Step 2: Then multiply all the prime factors GCF(660, 747, 420) = 3.