Greatest Common Factor of 12, 81, 945

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

• Greatest Common Factor of 12, 81, 945 by common division method
• Greatest Common Factor of 12, 81, 945 with matching the biggest common factor

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

Factors of 12

List of positive integer factors of 12 that divides 12 without a remainder.

1,2,3,4,6,12

Factors of 81

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

1,3,9,27,81

Factors of 945

List of positive integer factors of 945 that divides 945 without a remainder.

1,3,5,7,9,15,21,27,35,45,63,105,135,189,315,945

Greatest Common Factor

We found the factors 12,81,945 . The biggest common factor number is the GCF number.
So the greatest common factor 12,81,945 is 3.

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

• GCF of 59, 22, 243
• GCF of 36, 15, 857
• GCF of 65, 38, 121
• GCF of 78, 90, 901
• GCF of 90, 22, 365

1. What is the GCF of 12, 81, 945?

Answer: GCF of 12, 81, 945 is 3.

2. How to Find the GCF of 12, 81, 945

Answer: Greatest Common Factor(GCF) of 12, 81, 945 = 3

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

Step 2: Then multiply all the prime factors GCF(12, 81, 945) = 3.