Greatest Common Factor of 30, 39, 13, 25, 855

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

• Greatest Common Factor of 30, 39, 13, 25, 855 by common division method
• Greatest Common Factor of 30, 39, 13, 25, 855 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 39

List of positive integer factors of 39 that divides 39 without a remainder.

1,3,13,39

Factors of 13

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

1,13

Factors of 25

List of positive integer factors of 25 that divides 25 without a remainder.

1,5,25

Factors of 855

List of positive integer factors of 855 that divides 855 without a remainder.

1,3,5,9,15,19,45,57,95,171,285,855

Greatest Common Factor

We found the factors 30,39,13,25,855 . The biggest common factor number is the GCF number.
So the greatest common factor 30,39,13,25,855 is 1.

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

• GCF of 37, 25, 91, 95, 628
• GCF of 76, 73, 83, 66, 729
• GCF of 96, 16, 19, 12, 247
• GCF of 20, 41, 68, 10, 708
• GCF of 42, 24, 13, 79, 764

1. What is the GCF of 30, 39, 13, 25, 855?

Answer: GCF of 30, 39, 13, 25, 855 is 1.

2. How to Find the GCF of 30, 39, 13, 25, 855

Answer: Greatest Common Factor(GCF) of 30, 39, 13, 25, 855 = 1

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

Step 2: Then multiply all the prime factors GCF(30, 39, 13, 25, 855) = 1.