Greatest Common Factor of 28, 51, 12, 13, 30

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

• Greatest Common Factor of 28, 51, 12, 13, 30 by common division method
• Greatest Common Factor of 28, 51, 12, 13, 30 with matching the biggest common factor

Maximum 4 Number can be enter but you can reset

∴ 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 51

List of positive integer factors of 51 that divides 51 without a remainder.

1,3,17,51

Factors of 12

List of positive integer factors of 12 that divides 12 without a remainder.

1,2,3,4,6,12

Factors of 13

List of positive integer factors of 13 that divides 13 without a remainder.

1,13

Factors of 30

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

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

Greatest Common Factor

We found the factors 28,51,12,13,30 . The biggest common factor number is the GCF number.
So the greatest common factor 28,51,12,13,30 is 1.

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

• GCF of 91, 96, 45, 18, 47
• GCF of 64, 12, 39, 96, 46
• GCF of 13, 34, 15, 27, 90
• GCF of 32, 64, 59, 69, 26
• GCF of 81, 62, 50, 51, 15

1. What is the GCF of 28, 51, 12, 13, 30?

Answer: GCF of 28, 51, 12, 13, 30 is 1.

2. How to Find the GCF of 28, 51, 12, 13, 30

Answer: Greatest Common Factor(GCF) of 28, 51, 12, 13, 30 = 1

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

Step 2: Then multiply all the prime factors GCF(28, 51, 12, 13, 30) = 1.