Greatest Common Factor of 18, 12, 66, 145

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

• Greatest Common Factor of 18, 12, 66, 145 by common division method
• Greatest Common Factor of 18, 12, 66, 145 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 12

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

1,2,3,4,6,12

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 145

List of positive integer factors of 145 that divides 145 without a remainder.

1,5,29,145

Greatest Common Factor

We found the factors 18,12,66,145 . The biggest common factor number is the GCF number.
So the greatest common factor 18,12,66,145 is 1.

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

• GCF of 72, 94, 56, 998
• GCF of 91, 59, 26, 383
• GCF of 90, 99, 75, 978
• GCF of 96, 23, 56, 415
• GCF of 13, 84, 91, 264

1. What is the GCF of 18, 12, 66, 145?

Answer: GCF of 18, 12, 66, 145 is 1.

2. How to Find the GCF of 18, 12, 66, 145

Answer: Greatest Common Factor(GCF) of 18, 12, 66, 145 = 1

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

Step 2: Then multiply all the prime factors GCF(18, 12, 66, 145) = 1.