Greatest Common Factor of 47, 81, 18, 145

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

• Greatest Common Factor of 47, 81, 18, 145 by common division method
• Greatest Common Factor of 47, 81, 18, 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 47

List of positive integer factors of 47 that divides 47 without a remainder.

1,47

Factors of 81

List of positive integer factors of 81 that divides 81 without a remainder.

1,3,9,27,81

Factors of 18

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

1,2,3,6,9,18

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 47,81,18,145 . The biggest common factor number is the GCF number.
So the greatest common factor 47,81,18,145 is 1.

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

• GCF of 11, 10, 93, 697
• GCF of 82, 88, 88, 338
• GCF of 66, 43, 22, 580
• GCF of 49, 40, 18, 921
• GCF of 55, 62, 13, 924

1. What is the GCF of 47, 81, 18, 145?

Answer: GCF of 47, 81, 18, 145 is 1.

2. How to Find the GCF of 47, 81, 18, 145

Answer: Greatest Common Factor(GCF) of 47, 81, 18, 145 = 1

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

Step 2: Then multiply all the prime factors GCF(47, 81, 18, 145) = 1.