Greatest Common Factor of 30, 21, 550

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

• Greatest Common Factor of 30, 21, 550 by common division method
• Greatest Common Factor of 30, 21, 550 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 30

List of positive integer factors of 30 that divides 30 without a remainder.

1,2,3,5,6,10,15,30

Factors of 21

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

1,3,7,21

Factors of 550

List of positive integer factors of 550 that divides 550 without a remainder.

1,2,5,10,11,22,25,50,55,110,275,550

Greatest Common Factor

We found the factors 30,21,550 . The biggest common factor number is the GCF number.
So the greatest common factor 30,21,550 is 1.

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

• GCF of 46, 39, 156
• GCF of 55, 14, 346
• GCF of 62, 74, 636
• GCF of 21, 48, 831
• GCF of 33, 13, 823

1. What is the GCF of 30, 21, 550?

Answer: GCF of 30, 21, 550 is 1.

2. How to Find the GCF of 30, 21, 550

Answer: Greatest Common Factor(GCF) of 30, 21, 550 = 1

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

Step 2: Then multiply all the prime factors GCF(30, 21, 550) = 1.