Greatest Common Factor of 15, 90, 19, 97

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

• Greatest Common Factor of 15, 90, 19, 97 by common division method
• Greatest Common Factor of 15, 90, 19, 97 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 90

List of positive integer factors of 90 that divides 90 without a remainder.

1,2,3,5,6,9,10,15,18,30,45,90

Factors of 19

List of positive integer factors of 19 that divides 19 without a remainder.

1,19

Factors of 97

List of positive integer factors of 97 that divides 97 without a remainder.

1,97

Greatest Common Factor

We found the factors 15,90,19,97 . The biggest common factor number is the GCF number.
So the greatest common factor 15,90,19,97 is 1.

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

• GCF of 72, 16, 82, 25
• GCF of 37, 21, 12, 88
• GCF of 79, 80, 19, 14
• GCF of 66, 15, 72, 17
• GCF of 71, 85, 58, 38

1. What is the GCF of 15, 90, 19, 97?

Answer: GCF of 15, 90, 19, 97 is 1.

2. How to Find the GCF of 15, 90, 19, 97

Answer: Greatest Common Factor(GCF) of 15, 90, 19, 97 = 1

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

Step 2: Then multiply all the prime factors GCF(15, 90, 19, 97) = 1.