Greatest Common Factor of 21, 391, 211

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

• Greatest Common Factor of 21, 391, 211 by common division method
• Greatest Common Factor of 21, 391, 211 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 391

List of positive integer factors of 391 that divides 391 without a remainder.

1,17,23,391

Factors of 211

List of positive integer factors of 211 that divides 211 without a remainder.

1,211

Greatest Common Factor

We found the factors 21,391,211 . The biggest common factor number is the GCF number.
So the greatest common factor 21,391,211 is 1.

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

• GCF of 15, 864, 452
• GCF of 14, 566, 685
• GCF of 31, 927, 722
• GCF of 59, 250, 592
• GCF of 40, 154, 419

1. What is the GCF of 21, 391, 211?

Answer: GCF of 21, 391, 211 is 1.

2. How to Find the GCF of 21, 391, 211

Answer: Greatest Common Factor(GCF) of 21, 391, 211 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 391, 211) = 1.