Greatest Common Factor of 21, 85, 27, 839

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

• Greatest Common Factor of 21, 85, 27, 839 by common division method
• Greatest Common Factor of 21, 85, 27, 839 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 21

List of positive integer factors of 21 that divides 21 without a remainder.

1,3,7,21

Factors of 85

List of positive integer factors of 85 that divides 85 without a remainder.

1,5,17,85

Factors of 27

List of positive integer factors of 27 that divides 27 without a remainder.

1,3,9,27

Factors of 839

List of positive integer factors of 839 that divides 839 without a remainder.

1,839

Greatest Common Factor

We found the factors 21,85,27,839 . The biggest common factor number is the GCF number.
So the greatest common factor 21,85,27,839 is 1.

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

• GCF of 61, 95, 20, 743
• GCF of 86, 16, 50, 890
• GCF of 92, 62, 59, 233
• GCF of 66, 15, 42, 367
• GCF of 27, 51, 89, 427

1. What is the GCF of 21, 85, 27, 839?

Answer: GCF of 21, 85, 27, 839 is 1.

2. How to Find the GCF of 21, 85, 27, 839

Answer: Greatest Common Factor(GCF) of 21, 85, 27, 839 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 85, 27, 839) = 1.