Greatest Common Factor of 15, 99, 638

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

• Greatest Common Factor of 15, 99, 638 by common division method
• Greatest Common Factor of 15, 99, 638 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 15

List of positive integer factors of 15 that divides 15 without a remainder.

1,3,5,15

Factors of 99

List of positive integer factors of 99 that divides 99 without a remainder.

1,3,9,11,33,99

Factors of 638

List of positive integer factors of 638 that divides 638 without a remainder.

1,2,11,22,29,58,319,638

Greatest Common Factor

We found the factors 15,99,638 . The biggest common factor number is the GCF number.
So the greatest common factor 15,99,638 is 1.

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

• GCF of 42, 41, 961
• GCF of 55, 82, 910
• GCF of 79, 61, 704
• GCF of 71, 33, 399
• GCF of 25, 42, 675

1. What is the GCF of 15, 99, 638?

Answer: GCF of 15, 99, 638 is 1.

2. How to Find the GCF of 15, 99, 638

Answer: Greatest Common Factor(GCF) of 15, 99, 638 = 1

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

Step 2: Then multiply all the prime factors GCF(15, 99, 638) = 1.