Greatest Common Factor of 81, 15, 309

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

• Greatest Common Factor of 81, 15, 309 by common division method
• Greatest Common Factor of 81, 15, 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 15

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

1,3,5,15

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 81,15,309 . The biggest common factor number is the GCF number.
So the greatest common factor 81,15,309 is 3.

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

• GCF of 95, 32, 761
• GCF of 25, 12, 538
• GCF of 64, 77, 937
• GCF of 94, 44, 539
• GCF of 88, 22, 890

1. What is the GCF of 81, 15, 309?

Answer: GCF of 81, 15, 309 is 3.

2. How to Find the GCF of 81, 15, 309

Answer: Greatest Common Factor(GCF) of 81, 15, 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, 15, 309) = 3.