Greatest Common Factor of 17, 45, 91, 87

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

• Greatest Common Factor of 17, 45, 91, 87 by common division method
• Greatest Common Factor of 17, 45, 91, 87 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 17

List of positive integer factors of 17 that divides 17 without a remainder.

1,17

Factors of 45

List of positive integer factors of 45 that divides 45 without a remainder.

1,3,5,9,15,45

Factors of 91

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

1,7,13,91

Factors of 87

List of positive integer factors of 87 that divides 87 without a remainder.

1,3,29,87

Greatest Common Factor

We found the factors 17,45,91,87 . The biggest common factor number is the GCF number.
So the greatest common factor 17,45,91,87 is 1.

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

• GCF of 82, 19, 37, 70
• GCF of 90, 46, 12, 16
• GCF of 75, 11, 56, 30
• GCF of 35, 53, 79, 30
• GCF of 60, 51, 70, 48

1. What is the GCF of 17, 45, 91, 87?

Answer: GCF of 17, 45, 91, 87 is 1.

2. How to Find the GCF of 17, 45, 91, 87

Answer: Greatest Common Factor(GCF) of 17, 45, 91, 87 = 1

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

Step 2: Then multiply all the prime factors GCF(17, 45, 91, 87) = 1.