Greatest Common Factor of 66, 76, 21, 400

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

• Greatest Common Factor of 66, 76, 21, 400 by common division method
• Greatest Common Factor of 66, 76, 21, 400 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 66

List of positive integer factors of 66 that divides 66 without a remainder.

1,2,3,6,11,22,33,66

Factors of 76

List of positive integer factors of 76 that divides 76 without a remainder.

1,2,4,19,38,76

Factors of 21

List of positive integer factors of 21 that divides 21 without a remainder.

1,3,7,21

Factors of 400

List of positive integer factors of 400 that divides 400 without a remainder.

1,2,4,5,8,10,16,20,25,40,50,80,100,200,400

Greatest Common Factor

We found the factors 66,76,21,400 . The biggest common factor number is the GCF number.
So the greatest common factor 66,76,21,400 is 1.

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

• GCF of 25, 69, 51, 468
• GCF of 55, 67, 10, 571
• GCF of 88, 65, 52, 956
• GCF of 10, 52, 45, 137
• GCF of 95, 84, 78, 660

1. What is the GCF of 66, 76, 21, 400?

Answer: GCF of 66, 76, 21, 400 is 1.

2. How to Find the GCF of 66, 76, 21, 400

Answer: Greatest Common Factor(GCF) of 66, 76, 21, 400 = 1

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

Step 2: Then multiply all the prime factors GCF(66, 76, 21, 400) = 1.