Greatest Common Factor of 81, 90, 309

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

• Greatest Common Factor of 81, 90, 309 by common division method
• Greatest Common Factor of 81, 90, 309 with matching the biggest common factor

Maximum 4 Number can be enter but you can reset

∴ So the GCF of the given numbers is 3 = 3

Factors of 81

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

1,3,9,27,81

Factors of 90

List of positive integer factors of 90 that divides 90 without a remainder.

1,2,3,5,6,9,10,15,18,30,45,90

Factors of 309

List of positive integer factors of 309 that divides 309 without a remainder.

1,3,103,309

Greatest Common Factor

We found the factors 81,90,309 . The biggest common factor number is the GCF number.
So the greatest common factor 81,90,309 is 3.

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

• GCF of 90, 71, 837
• GCF of 61, 91, 484
• GCF of 24, 46, 911
• GCF of 66, 79, 438
• GCF of 24, 53, 357

1. What is the GCF of 81, 90, 309?

Answer: GCF of 81, 90, 309 is 3.

2. How to Find the GCF of 81, 90, 309

Answer: Greatest Common Factor(GCF) of 81, 90, 309 = 3

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

Step 2: Then multiply all the prime factors GCF(81, 90, 309) = 3.