Greatest Common Factor of 18, 17, 63, 7, 12

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

• Greatest Common Factor of 18, 17, 63, 7, 12 by common division method
• Greatest Common Factor of 18, 17, 63, 7, 12 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 18

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

1,2,3,6,9,18

Factors of 17

List of positive integer factors of 17 that divides 17 without a remainder.

1,17

Factors of 63

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

1,3,7,9,21,63

Factors of 7

List of positive integer factors of 7 that divides 7 without a remainder.

1,7

Factors of 12

List of positive integer factors of 12 that divides 12 without a remainder.

1,2,3,4,6,12

Greatest Common Factor

We found the factors 18,17,63,7,12 . The biggest common factor number is the GCF number.
So the greatest common factor 18,17,63,7,12 is 1.

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

• GCF of 58, 59, 71, 2, 46
• GCF of 76, 22, 98, 3, 67
• GCF of 78, 34, 66, 7, 24
• GCF of 91, 95, 64, 8, 15
• GCF of 52, 96, 23, 2, 24

1. What is the GCF of 18, 17, 63, 7, 12?

Answer: GCF of 18, 17, 63, 7, 12 is 1.

2. How to Find the GCF of 18, 17, 63, 7, 12

Answer: Greatest Common Factor(GCF) of 18, 17, 63, 7, 12 = 1

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

Step 2: Then multiply all the prime factors GCF(18, 17, 63, 7, 12) = 1.