Greatest Common Factor of 63, 73, 18, 21

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

• Greatest Common Factor of 63, 73, 18, 21 by common division method
• Greatest Common Factor of 63, 73, 18, 21 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 63

List of positive integer factors of 63 that divides 63 without a remainder.

1,3,7,9,21,63

Factors of 73

List of positive integer factors of 73 that divides 73 without a remainder.

1,73

Factors of 18

List of positive integer factors of 18 that divides 18 without a remainder.

1,2,3,6,9,18

Factors of 21

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

1,3,7,21

Greatest Common Factor

We found the factors 63,73,18,21 . The biggest common factor number is the GCF number.
So the greatest common factor 63,73,18,21 is 1.

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

• GCF of 89, 23, 70, 22
• GCF of 52, 88, 84, 94
• GCF of 30, 27, 96, 89
• GCF of 51, 76, 22, 50
• GCF of 36, 43, 33, 19

1. What is the GCF of 63, 73, 18, 21?

Answer: GCF of 63, 73, 18, 21 is 1.

2. How to Find the GCF of 63, 73, 18, 21

Answer: Greatest Common Factor(GCF) of 63, 73, 18, 21 = 1

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

Step 2: Then multiply all the prime factors GCF(63, 73, 18, 21) = 1.