Greatest Common Factor of 12, 21, 43, 317

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

• Greatest Common Factor of 12, 21, 43, 317 by common division method
• Greatest Common Factor of 12, 21, 43, 317 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 12

List of positive integer factors of 12 that divides 12 without a remainder.

1,2,3,4,6,12

Factors of 21

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

1,3,7,21

Factors of 43

List of positive integer factors of 43 that divides 43 without a remainder.

1,43

Factors of 317

List of positive integer factors of 317 that divides 317 without a remainder.

1,317

Greatest Common Factor

We found the factors 12,21,43,317 . The biggest common factor number is the GCF number.
So the greatest common factor 12,21,43,317 is 1.

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

• GCF of 33, 68, 30, 228
• GCF of 34, 80, 38, 883
• GCF of 47, 89, 29, 642
• GCF of 41, 50, 39, 704
• GCF of 23, 49, 67, 472

1. What is the GCF of 12, 21, 43, 317?

Answer: GCF of 12, 21, 43, 317 is 1.

2. How to Find the GCF of 12, 21, 43, 317

Answer: Greatest Common Factor(GCF) of 12, 21, 43, 317 = 1

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

Step 2: Then multiply all the prime factors GCF(12, 21, 43, 317) = 1.