Greatest Common Factor of 420, 809, 61

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

• Greatest Common Factor of 420, 809, 61 by common division method
• Greatest Common Factor of 420, 809, 61 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 420

List of positive integer factors of 420 that divides 420 without a remainder.

1,2,3,4,5,6,7,10,12,14,15,20,21,28,30,35,42,60,70,84,105,140,210,420

Factors of 809

List of positive integer factors of 809 that divides 809 without a remainder.

1,809

Factors of 61

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

1,61

Greatest Common Factor

We found the factors 420,809,61 . The biggest common factor number is the GCF number.
So the greatest common factor 420,809,61 is 1.

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

• GCF of 513, 192, 99
• GCF of 183, 642, 26
• GCF of 267, 505, 68
• GCF of 233, 450, 69
• GCF of 317, 899, 64

1. What is the GCF of 420, 809, 61?

Answer: GCF of 420, 809, 61 is 1.

2. How to Find the GCF of 420, 809, 61

Answer: Greatest Common Factor(GCF) of 420, 809, 61 = 1

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

Step 2: Then multiply all the prime factors GCF(420, 809, 61) = 1.