Greatest Common Factor of 40, 65, 61, 170

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

• Greatest Common Factor of 40, 65, 61, 170 by common division method
• Greatest Common Factor of 40, 65, 61, 170 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 40

List of positive integer factors of 40 that divides 40 without a remainder.

1,2,4,5,8,10,20,40

Factors of 65

List of positive integer factors of 65 that divides 65 without a remainder.

1,5,13,65

Factors of 61

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

1,61

Factors of 170

List of positive integer factors of 170 that divides 170 without a remainder.

1,2,5,10,17,34,85,170

Greatest Common Factor

We found the factors 40,65,61,170 . The biggest common factor number is the GCF number.
So the greatest common factor 40,65,61,170 is 1.

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

• GCF of 76, 81, 70, 475
• GCF of 40, 47, 86, 876
• GCF of 42, 60, 71, 711
• GCF of 21, 24, 81, 743
• GCF of 23, 69, 36, 230

1. What is the GCF of 40, 65, 61, 170?

Answer: GCF of 40, 65, 61, 170 is 1.

2. How to Find the GCF of 40, 65, 61, 170

Answer: Greatest Common Factor(GCF) of 40, 65, 61, 170 = 1

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

Step 2: Then multiply all the prime factors GCF(40, 65, 61, 170) = 1.