Greatest Common Factor of 61, 85, 89, 30

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

• Greatest Common Factor of 61, 85, 89, 30 by common division method
• Greatest Common Factor of 61, 85, 89, 30 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 61

List of positive integer factors of 61 that divides 61 without a remainder.

1,61

Factors of 85

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

1,5,17,85

Factors of 89

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

1,89

Factors of 30

List of positive integer factors of 30 that divides 30 without a remainder.

1,2,3,5,6,10,15,30

Greatest Common Factor

We found the factors 61,85,89,30 . The biggest common factor number is the GCF number.
So the greatest common factor 61,85,89,30 is 1.

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

• GCF of 30, 88, 65, 86
• GCF of 98, 15, 66, 77
• GCF of 24, 90, 39, 80
• GCF of 28, 84, 29, 20
• GCF of 55, 29, 81, 97

1. What is the GCF of 61, 85, 89, 30?

Answer: GCF of 61, 85, 89, 30 is 1.

2. How to Find the GCF of 61, 85, 89, 30

Answer: Greatest Common Factor(GCF) of 61, 85, 89, 30 = 1

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

Step 2: Then multiply all the prime factors GCF(61, 85, 89, 30) = 1.