Greatest Common Factor of 13, 90, 81, 34

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

• Greatest Common Factor of 13, 90, 81, 34 by common division method
• Greatest Common Factor of 13, 90, 81, 34 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 13

List of positive integer factors of 13 that divides 13 without a remainder.

1,13

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 81

List of positive integer factors of 81 that divides 81 without a remainder.

1,3,9,27,81

Factors of 34

List of positive integer factors of 34 that divides 34 without a remainder.

1,2,17,34

Greatest Common Factor

We found the factors 13,90,81,34 . The biggest common factor number is the GCF number.
So the greatest common factor 13,90,81,34 is 1.

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

• GCF of 51, 45, 61, 89
• GCF of 74, 74, 30, 64
• GCF of 73, 59, 78, 47
• GCF of 66, 75, 76, 72
• GCF of 87, 54, 19, 96

1. What is the GCF of 13, 90, 81, 34?

Answer: GCF of 13, 90, 81, 34 is 1.

2. How to Find the GCF of 13, 90, 81, 34

Answer: Greatest Common Factor(GCF) of 13, 90, 81, 34 = 1

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

Step 2: Then multiply all the prime factors GCF(13, 90, 81, 34) = 1.