Greatest Common Factor of 21, 66, 418

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

• Greatest Common Factor of 21, 66, 418 by common division method
• Greatest Common Factor of 21, 66, 418 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 21

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

1,3,7,21

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 418

List of positive integer factors of 418 that divides 418 without a remainder.

1,2,11,19,22,38,209,418

Greatest Common Factor

We found the factors 21,66,418 . The biggest common factor number is the GCF number.
So the greatest common factor 21,66,418 is 1.

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

• GCF of 56, 64, 194
• GCF of 24, 73, 784
• GCF of 61, 26, 848
• GCF of 48, 39, 743
• GCF of 96, 20, 477

1. What is the GCF of 21, 66, 418?

Answer: GCF of 21, 66, 418 is 1.

2. How to Find the GCF of 21, 66, 418

Answer: Greatest Common Factor(GCF) of 21, 66, 418 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 66, 418) = 1.