Greatest Common Factor of 61, 81, 680

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

• Greatest Common Factor of 61, 81, 680 by common division method
• Greatest Common Factor of 61, 81, 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 61

List of positive integer factors of 61 that divides 61 without a remainder.

1,61

Factors of 81

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

1,3,9,27,81

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 61,81,680 . The biggest common factor number is the GCF number.
So the greatest common factor 61,81,680 is 1.

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

• GCF of 63, 53, 168
• GCF of 18, 82, 902
• GCF of 56, 15, 830
• GCF of 91, 64, 935
• GCF of 70, 34, 498

1. What is the GCF of 61, 81, 680?

Answer: GCF of 61, 81, 680 is 1.

2. How to Find the GCF of 61, 81, 680

Answer: Greatest Common Factor(GCF) of 61, 81, 680 = 1

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

Step 2: Then multiply all the prime factors GCF(61, 81, 680) = 1.