Greatest Common Factor of 81, 61, 289

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

• Greatest Common Factor of 81, 61, 289 by common division method
• Greatest Common Factor of 81, 61, 289 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 61

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

1,61

Factors of 289

List of positive integer factors of 289 that divides 289 without a remainder.

1,17,289

Greatest Common Factor

We found the factors 81,61,289 . The biggest common factor number is the GCF number.
So the greatest common factor 81,61,289 is 1.

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

• GCF of 81, 20, 491
• GCF of 51, 28, 743
• GCF of 32, 82, 129
• GCF of 91, 56, 294
• GCF of 17, 46, 284

1. What is the GCF of 81, 61, 289?

Answer: GCF of 81, 61, 289 is 1.

2. How to Find the GCF of 81, 61, 289

Answer: Greatest Common Factor(GCF) of 81, 61, 289 = 1

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

Step 2: Then multiply all the prime factors GCF(81, 61, 289) = 1.