Greatest Common Factor of 28, 85, 30, 297

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

• Greatest Common Factor of 28, 85, 30, 297 by common division method
• Greatest Common Factor of 28, 85, 30, 297 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 28

List of positive integer factors of 28 that divides 28 without a remainder.

1,2,4,7,14,28

Factors of 85

List of positive integer factors of 85 that divides 85 without a remainder.

1,5,17,85

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 297

List of positive integer factors of 297 that divides 297 without a remainder.

1,3,9,11,27,33,99,297

Greatest Common Factor

We found the factors 28,85,30,297 . The biggest common factor number is the GCF number.
So the greatest common factor 28,85,30,297 is 1.

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

• GCF of 44, 99, 61, 195
• GCF of 80, 51, 71, 336
• GCF of 57, 94, 16, 180
• GCF of 58, 10, 62, 104
• GCF of 66, 15, 36, 200

1. What is the GCF of 28, 85, 30, 297?

Answer: GCF of 28, 85, 30, 297 is 1.

2. How to Find the GCF of 28, 85, 30, 297

Answer: Greatest Common Factor(GCF) of 28, 85, 30, 297 = 1

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

Step 2: Then multiply all the prime factors GCF(28, 85, 30, 297) = 1.