Greatest Common Factor of 90, 17, 91, 71

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

• Greatest Common Factor of 90, 17, 91, 71 by common division method
• Greatest Common Factor of 90, 17, 91, 71 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 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 17

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

1,17

Factors of 91

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

1,7,13,91

Factors of 71

List of positive integer factors of 71 that divides 71 without a remainder.

1,71

Greatest Common Factor

We found the factors 90,17,91,71 . The biggest common factor number is the GCF number.
So the greatest common factor 90,17,91,71 is 1.

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

• GCF of 85, 13, 40, 11
• GCF of 17, 17, 77, 87
• GCF of 29, 29, 82, 78
• GCF of 30, 94, 68, 85
• GCF of 79, 38, 77, 74

1. What is the GCF of 90, 17, 91, 71?

Answer: GCF of 90, 17, 91, 71 is 1.

2. How to Find the GCF of 90, 17, 91, 71

Answer: Greatest Common Factor(GCF) of 90, 17, 91, 71 = 1

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

Step 2: Then multiply all the prime factors GCF(90, 17, 91, 71) = 1.