Greatest Common Factor of 81, 15, 47, 89

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

• Greatest Common Factor of 81, 15, 47, 89 by common division method
• Greatest Common Factor of 81, 15, 47, 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 81

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

1,3,9,27,81

Factors of 15

List of positive integer factors of 15 that divides 15 without a remainder.

1,3,5,15

Factors of 47

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

1,47

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 81,15,47,89 . The biggest common factor number is the GCF number.
So the greatest common factor 81,15,47,89 is 1.

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

• GCF of 50, 68, 18, 87
• GCF of 33, 31, 48, 24
• GCF of 47, 92, 98, 39
• GCF of 81, 93, 58, 64
• GCF of 80, 36, 70, 79

1. What is the GCF of 81, 15, 47, 89?

Answer: GCF of 81, 15, 47, 89 is 1.

2. How to Find the GCF of 81, 15, 47, 89

Answer: Greatest Common Factor(GCF) of 81, 15, 47, 89 = 1

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

Step 2: Then multiply all the prime factors GCF(81, 15, 47, 89) = 1.