Greatest Common Factor of 78, 42, 809, 213

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

• Greatest Common Factor of 78, 42, 809, 213 by common division method
• Greatest Common Factor of 78, 42, 809, 213 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 78

List of positive integer factors of 78 that divides 78 without a remainder.

1,2,3,6,13,26,39,78

Factors of 42

List of positive integer factors of 42 that divides 42 without a remainder.

1,2,3,6,7,14,21,42

Factors of 809

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

1,809

Factors of 213

List of positive integer factors of 213 that divides 213 without a remainder.

1,3,71,213

Greatest Common Factor

We found the factors 78,42,809,213 . The biggest common factor number is the GCF number.
So the greatest common factor 78,42,809,213 is 1.

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

• GCF of 12, 70, 910, 274
• GCF of 64, 55, 257, 654
• GCF of 26, 88, 275, 877
• GCF of 12, 93, 143, 294
• GCF of 31, 41, 805, 872

1. What is the GCF of 78, 42, 809, 213?

Answer: GCF of 78, 42, 809, 213 is 1.

2. How to Find the GCF of 78, 42, 809, 213

Answer: Greatest Common Factor(GCF) of 78, 42, 809, 213 = 1

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

Step 2: Then multiply all the prime factors GCF(78, 42, 809, 213) = 1.