Greatest Common Factor of 21, 65, 847

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

• Greatest Common Factor of 21, 65, 847 by common division method
• Greatest Common Factor of 21, 65, 847 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 65

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

1,5,13,65

Factors of 847

List of positive integer factors of 847 that divides 847 without a remainder.

1,7,11,77,121,847

Greatest Common Factor

We found the factors 21,65,847 . The biggest common factor number is the GCF number.
So the greatest common factor 21,65,847 is 1.

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

• GCF of 85, 69, 917
• GCF of 97, 59, 561
• GCF of 60, 94, 556
• GCF of 64, 41, 353
• GCF of 31, 30, 781

1. What is the GCF of 21, 65, 847?

Answer: GCF of 21, 65, 847 is 1.

2. How to Find the GCF of 21, 65, 847

Answer: Greatest Common Factor(GCF) of 21, 65, 847 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 65, 847) = 1.