Greatest Common Factor of 420, 870, 79

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

• Greatest Common Factor of 420, 870, 79 by common division method
• Greatest Common Factor of 420, 870, 79 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 870

List of positive integer factors of 870 that divides 870 without a remainder.

1,2,3,5,6,10,15,29,30,58,87,145,174,290,435,870

Factors of 79

List of positive integer factors of 79 that divides 79 without a remainder.

1,79

Greatest Common Factor

We found the factors 420,870,79 . The biggest common factor number is the GCF number.
So the greatest common factor 420,870,79 is 1.

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

• GCF of 100, 734, 17
• GCF of 230, 592, 55
• GCF of 662, 714, 37
• GCF of 537, 894, 17
• GCF of 612, 755, 94

1. What is the GCF of 420, 870, 79?

Answer: GCF of 420, 870, 79 is 1.

2. How to Find the GCF of 420, 870, 79

Answer: Greatest Common Factor(GCF) of 420, 870, 79 = 1

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

Step 2: Then multiply all the prime factors GCF(420, 870, 79) = 1.