Greatest Common Factor of 13, 11, 18, 680

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

• Greatest Common Factor of 13, 11, 18, 680 by common division method
• Greatest Common Factor of 13, 11, 18, 680 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 11

List of positive integer factors of 11 that divides 11 without a remainder.

1,11

Factors of 18

List of positive integer factors of 18 that divides 18 without a remainder.

1,2,3,6,9,18

Factors of 680

List of positive integer factors of 680 that divides 680 without a remainder.

1,2,4,5,8,10,17,20,34,40,68,85,136,170,340,680

Greatest Common Factor

We found the factors 13,11,18,680 . The biggest common factor number is the GCF number.
So the greatest common factor 13,11,18,680 is 1.

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

• GCF of 31, 30, 96, 422
• GCF of 90, 36, 17, 412
• GCF of 25, 96, 17, 409
• GCF of 16, 55, 97, 252
• GCF of 70, 46, 57, 103

1. What is the GCF of 13, 11, 18, 680?

Answer: GCF of 13, 11, 18, 680 is 1.

2. How to Find the GCF of 13, 11, 18, 680

Answer: Greatest Common Factor(GCF) of 13, 11, 18, 680 = 1

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

Step 2: Then multiply all the prime factors GCF(13, 11, 18, 680) = 1.