Greatest Common Factor of 420, 123, 819

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

• Greatest Common Factor of 420, 123, 819 by common division method
• Greatest Common Factor of 420, 123, 819 with matching the biggest common factor

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∴ So the GCF of the given numbers is 3 = 3

Factors of 420

List of positive integer factors of 420 that divides 420 without a remainder.

1,2,3,4,5,6,7,10,12,14,15,20,21,28,30,35,42,60,70,84,105,140,210,420

Factors of 123

List of positive integer factors of 123 that divides 123 without a remainder.

1,3,41,123

Factors of 819

List of positive integer factors of 819 that divides 819 without a remainder.

1,3,7,9,13,21,39,63,91,117,273,819

Greatest Common Factor

We found the factors 420,123,819 . The biggest common factor number is the GCF number.
So the greatest common factor 420,123,819 is 3.

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

• GCF of 933, 536, 401
• GCF of 264, 576, 320
• GCF of 400, 476, 172
• GCF of 260, 108, 179
• GCF of 231, 695, 190

1. What is the GCF of 420, 123, 819?

Answer: GCF of 420, 123, 819 is 3.

2. How to Find the GCF of 420, 123, 819

Answer: Greatest Common Factor(GCF) of 420, 123, 819 = 3

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

Step 2: Then multiply all the prime factors GCF(420, 123, 819) = 3.