Greatest Common Factor of 85, 81, 39, 18

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

• Greatest Common Factor of 85, 81, 39, 18 by common division method
• Greatest Common Factor of 85, 81, 39, 18 with matching the biggest common factor

Maximum 4 Number can be enter but you can reset

∴ GCF of numbers is 1 because of no common factors present between them.

Factors of 85

List of positive integer factors of 85 that divides 85 without a remainder.

1,5,17,85

Factors of 81

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

1,3,9,27,81

Factors of 39

List of positive integer factors of 39 that divides 39 without a remainder.

1,3,13,39

Factors of 18

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

1,2,3,6,9,18

Greatest Common Factor

We found the factors 85,81,39,18 . The biggest common factor number is the GCF number.
So the greatest common factor 85,81,39,18 is 1.

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

• GCF of 69, 43, 20, 95
• GCF of 31, 96, 10, 56
• GCF of 99, 74, 83, 37
• GCF of 39, 43, 30, 89
• GCF of 71, 86, 88, 17

1. What is the GCF of 85, 81, 39, 18?

Answer: GCF of 85, 81, 39, 18 is 1.

2. How to Find the GCF of 85, 81, 39, 18

Answer: Greatest Common Factor(GCF) of 85, 81, 39, 18 = 1

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

Step 2: Then multiply all the prime factors GCF(85, 81, 39, 18) = 1.