Greatest Common Factor of 21, 65, 349

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

• Greatest Common Factor of 21, 65, 349 by common division method
• Greatest Common Factor of 21, 65, 349 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 349

List of positive integer factors of 349 that divides 349 without a remainder.

1,349

Greatest Common Factor

We found the factors 21,65,349 . The biggest common factor number is the GCF number.
So the greatest common factor 21,65,349 is 1.

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

• GCF of 82, 41, 617
• GCF of 48, 29, 657
• GCF of 78, 50, 634
• GCF of 32, 67, 766
• GCF of 98, 61, 156

1. What is the GCF of 21, 65, 349?

Answer: GCF of 21, 65, 349 is 1.

2. How to Find the GCF of 21, 65, 349

Answer: Greatest Common Factor(GCF) of 21, 65, 349 = 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, 349) = 1.