Greatest Common Factor of 90, 71, 13, 30

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

• Greatest Common Factor of 90, 71, 13, 30 by common division method
• Greatest Common Factor of 90, 71, 13, 30 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 71

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

1,71

Factors of 13

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

1,13

Factors of 30

List of positive integer factors of 30 that divides 30 without a remainder.

1,2,3,5,6,10,15,30

Greatest Common Factor

We found the factors 90,71,13,30 . The biggest common factor number is the GCF number.
So the greatest common factor 90,71,13,30 is 1.

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

• GCF of 94, 95, 27, 70
• GCF of 77, 91, 51, 98
• GCF of 14, 33, 20, 74
• GCF of 21, 73, 38, 32
• GCF of 99, 61, 51, 29

1. What is the GCF of 90, 71, 13, 30?

Answer: GCF of 90, 71, 13, 30 is 1.

2. How to Find the GCF of 90, 71, 13, 30

Answer: Greatest Common Factor(GCF) of 90, 71, 13, 30 = 1

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

Step 2: Then multiply all the prime factors GCF(90, 71, 13, 30) = 1.