Greatest Common Factor of 11, 21, 27, 123

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

• Greatest Common Factor of 11, 21, 27, 123 by common division method
• Greatest Common Factor of 11, 21, 27, 123 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 11

List of positive integer factors of 11 that divides 11 without a remainder.

1,11

Factors of 21

List of positive integer factors of 21 that divides 21 without a remainder.

1,3,7,21

Factors of 27

List of positive integer factors of 27 that divides 27 without a remainder.

1,3,9,27

Factors of 123

List of positive integer factors of 123 that divides 123 without a remainder.

1,3,41,123

Greatest Common Factor

We found the factors 11,21,27,123 . The biggest common factor number is the GCF number.
So the greatest common factor 11,21,27,123 is 1.

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

• GCF of 16, 89, 50, 366
• GCF of 93, 39, 36, 281
• GCF of 36, 31, 41, 238
• GCF of 96, 83, 81, 455
• GCF of 13, 87, 90, 611

1. What is the GCF of 11, 21, 27, 123?

Answer: GCF of 11, 21, 27, 123 is 1.

2. How to Find the GCF of 11, 21, 27, 123

Answer: Greatest Common Factor(GCF) of 11, 21, 27, 123 = 1

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

Step 2: Then multiply all the prime factors GCF(11, 21, 27, 123) = 1.