Greatest Common Factor of 71, 81, 21, 261

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

• Greatest Common Factor of 71, 81, 21, 261 by common division method
• Greatest Common Factor of 71, 81, 21, 261 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 71

List of positive integer factors of 71 that divides 71 without a remainder.

1,71

Factors of 81

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

1,3,9,27,81

Factors of 21

List of positive integer factors of 21 that divides 21 without a remainder.

1,3,7,21

Factors of 261

List of positive integer factors of 261 that divides 261 without a remainder.

1,3,9,29,87,261

Greatest Common Factor

We found the factors 71,81,21,261 . The biggest common factor number is the GCF number.
So the greatest common factor 71,81,21,261 is 1.

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

• GCF of 87, 18, 66, 474
• GCF of 41, 78, 61, 468
• GCF of 86, 29, 90, 823
• GCF of 23, 70, 86, 962
• GCF of 37, 69, 88, 200

1. What is the GCF of 71, 81, 21, 261?

Answer: GCF of 71, 81, 21, 261 is 1.

2. How to Find the GCF of 71, 81, 21, 261

Answer: Greatest Common Factor(GCF) of 71, 81, 21, 261 = 1

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

Step 2: Then multiply all the prime factors GCF(71, 81, 21, 261) = 1.