Greatest Common Factor of 21, 55, 67, 231

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

• Greatest Common Factor of 21, 55, 67, 231 by common division method
• Greatest Common Factor of 21, 55, 67, 231 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 21

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

1,3,7,21

Factors of 55

List of positive integer factors of 55 that divides 55 without a remainder.

1,5,11,55

Factors of 67

List of positive integer factors of 67 that divides 67 without a remainder.

1,67

Factors of 231

List of positive integer factors of 231 that divides 231 without a remainder.

1,3,7,11,21,33,77,231

Greatest Common Factor

We found the factors 21,55,67,231 . The biggest common factor number is the GCF number.
So the greatest common factor 21,55,67,231 is 1.

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

• GCF of 95, 98, 92, 753
• GCF of 50, 88, 63, 773
• GCF of 15, 41, 40, 515
• GCF of 35, 10, 70, 211
• GCF of 49, 53, 47, 540

1. What is the GCF of 21, 55, 67, 231?

Answer: GCF of 21, 55, 67, 231 is 1.

2. How to Find the GCF of 21, 55, 67, 231

Answer: Greatest Common Factor(GCF) of 21, 55, 67, 231 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 55, 67, 231) = 1.