Greatest Common Factor of 15, 38, 91

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

• Greatest Common Factor of 15, 38, 91 by common division method
• Greatest Common Factor of 15, 38, 91 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 38

List of positive integer factors of 38 that divides 38 without a remainder.

1,2,19,38

Factors of 91

List of positive integer factors of 91 that divides 91 without a remainder.

1,7,13,91

Greatest Common Factor

We found the factors 15,38,91 . The biggest common factor number is the GCF number.
So the greatest common factor 15,38,91 is 1.

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

• GCF of 59, 60, 15
• GCF of 42, 66, 52
• GCF of 46, 81, 83
• GCF of 53, 76, 39
• GCF of 44, 33, 44

1. What is the GCF of 15, 38, 91?

Answer: GCF of 15, 38, 91 is 1.

2. How to Find the GCF of 15, 38, 91

Answer: Greatest Common Factor(GCF) of 15, 38, 91 = 1

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

Step 2: Then multiply all the prime factors GCF(15, 38, 91) = 1.