Greatest Common Factor of 30, 21, 284

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

• Greatest Common Factor of 30, 21, 284 by common division method
• Greatest Common Factor of 30, 21, 284 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 284

List of positive integer factors of 284 that divides 284 without a remainder.

1,2,4,71,142,284

Greatest Common Factor

We found the factors 30,21,284 . The biggest common factor number is the GCF number.
So the greatest common factor 30,21,284 is 1.

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

• GCF of 47, 69, 554
• GCF of 11, 29, 145
• GCF of 54, 58, 431
• GCF of 35, 68, 204
• GCF of 97, 20, 812

1. What is the GCF of 30, 21, 284?

Answer: GCF of 30, 21, 284 is 1.

2. How to Find the GCF of 30, 21, 284

Answer: Greatest Common Factor(GCF) of 30, 21, 284 = 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, 284) = 1.