Greatest Common Factor of 81, 80, 421

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

• Greatest Common Factor of 81, 80, 421 by common division method
• Greatest Common Factor of 81, 80, 421 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 80

List of positive integer factors of 80 that divides 80 without a remainder.

1,2,4,5,8,10,16,20,40,80

Factors of 421

List of positive integer factors of 421 that divides 421 without a remainder.

1,421

Greatest Common Factor

We found the factors 81,80,421 . The biggest common factor number is the GCF number.
So the greatest common factor 81,80,421 is 1.

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

• GCF of 33, 74, 152
• GCF of 35, 70, 888
• GCF of 37, 99, 262
• GCF of 46, 51, 406
• GCF of 86, 12, 331

1. What is the GCF of 81, 80, 421?

Answer: GCF of 81, 80, 421 is 1.

2. How to Find the GCF of 81, 80, 421

Answer: Greatest Common Factor(GCF) of 81, 80, 421 = 1

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

Step 2: Then multiply all the prime factors GCF(81, 80, 421) = 1.