Greatest Common Factor of 85, 78, 18, 89

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

• Greatest Common Factor of 85, 78, 18, 89 by common division method
• Greatest Common Factor of 85, 78, 18, 89 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 85

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

1,5,17,85

Factors of 78

List of positive integer factors of 78 that divides 78 without a remainder.

1,2,3,6,13,26,39,78

Factors of 18

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

1,2,3,6,9,18

Factors of 89

List of positive integer factors of 89 that divides 89 without a remainder.

1,89

Greatest Common Factor

We found the factors 85,78,18,89 . The biggest common factor number is the GCF number.
So the greatest common factor 85,78,18,89 is 1.

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

• GCF of 67, 74, 88, 93
• GCF of 45, 88, 47, 84
• GCF of 73, 58, 31, 22
• GCF of 12, 62, 53, 51
• GCF of 77, 50, 88, 68

1. What is the GCF of 85, 78, 18, 89?

Answer: GCF of 85, 78, 18, 89 is 1.

2. How to Find the GCF of 85, 78, 18, 89

Answer: Greatest Common Factor(GCF) of 85, 78, 18, 89 = 1

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

Step 2: Then multiply all the prime factors GCF(85, 78, 18, 89) = 1.