Greatest Common Factor of 821, 19, 12

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

• Greatest Common Factor of 821, 19, 12 by common division method
• Greatest Common Factor of 821, 19, 12 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 821

List of positive integer factors of 821 that divides 821 without a remainder.

1,821

Factors of 19

List of positive integer factors of 19 that divides 19 without a remainder.

1,19

Factors of 12

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

1,2,3,4,6,12

Greatest Common Factor

We found the factors 821,19,12 . The biggest common factor number is the GCF number.
So the greatest common factor 821,19,12 is 1.

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

• GCF of 791, 63, 30
• GCF of 324, 66, 68
• GCF of 978, 57, 33
• GCF of 246, 14, 48
• GCF of 240, 92, 20

1. What is the GCF of 821, 19, 12?

Answer: GCF of 821, 19, 12 is 1.

2. How to Find the GCF of 821, 19, 12

Answer: Greatest Common Factor(GCF) of 821, 19, 12 = 1

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

Step 2: Then multiply all the prime factors GCF(821, 19, 12) = 1.