Greatest Common Factor of 21, 75, 171

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

• Greatest Common Factor of 21, 75, 171 by common division method
• Greatest Common Factor of 21, 75, 171 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 21

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

1,3,7,21

Factors of 75

List of positive integer factors of 75 that divides 75 without a remainder.

1,3,5,15,25,75

Factors of 171

List of positive integer factors of 171 that divides 171 without a remainder.

1,3,9,19,57,171

Greatest Common Factor

We found the factors 21,75,171 . The biggest common factor number is the GCF number.
So the greatest common factor 21,75,171 is 3.

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

• GCF of 18, 21, 355
• GCF of 88, 38, 794
• GCF of 75, 17, 653
• GCF of 35, 42, 402
• GCF of 96, 83, 465

1. What is the GCF of 21, 75, 171?

Answer: GCF of 21, 75, 171 is 3.

2. How to Find the GCF of 21, 75, 171

Answer: Greatest Common Factor(GCF) of 21, 75, 171 = 3

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

Step 2: Then multiply all the prime factors GCF(21, 75, 171) = 3.