Greatest Common Factor of 15, 66, 51, 891

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

• Greatest Common Factor of 15, 66, 51, 891 by common division method
• Greatest Common Factor of 15, 66, 51, 891 with matching the biggest common factor

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

Factors of 15

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

1,3,5,15

Factors of 66

List of positive integer factors of 66 that divides 66 without a remainder.

1,2,3,6,11,22,33,66

Factors of 51

List of positive integer factors of 51 that divides 51 without a remainder.

1,3,17,51

Factors of 891

List of positive integer factors of 891 that divides 891 without a remainder.

1,3,9,11,27,33,81,99,297,891

Greatest Common Factor

We found the factors 15,66,51,891 . The biggest common factor number is the GCF number.
So the greatest common factor 15,66,51,891 is 3.

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

• GCF of 60, 67, 79, 982
• GCF of 51, 74, 70, 745
• GCF of 75, 95, 20, 780
• GCF of 41, 22, 20, 497
• GCF of 76, 18, 94, 204

1. What is the GCF of 15, 66, 51, 891?

Answer: GCF of 15, 66, 51, 891 is 3.

2. How to Find the GCF of 15, 66, 51, 891

Answer: Greatest Common Factor(GCF) of 15, 66, 51, 891 = 3

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

Step 2: Then multiply all the prime factors GCF(15, 66, 51, 891) = 3.