Greatest Common Factor of 144, 420, 391

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

• Greatest Common Factor of 144, 420, 391 by common division method
• Greatest Common Factor of 144, 420, 391 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 144

List of positive integer factors of 144 that divides 144 without a remainder.

1,2,3,4,6,8,9,12,16,18,24,36,48,72,144

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 391

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

1,17,23,391

Greatest Common Factor

We found the factors 144,420,391 . The biggest common factor number is the GCF number.
So the greatest common factor 144,420,391 is 1.

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

• GCF of 174, 854, 686
• GCF of 393, 731, 980
• GCF of 333, 185, 568
• GCF of 590, 547, 213
• GCF of 805, 102, 167

1. What is the GCF of 144, 420, 391?

Answer: GCF of 144, 420, 391 is 1.

2. How to Find the GCF of 144, 420, 391

Answer: Greatest Common Factor(GCF) of 144, 420, 391 = 1

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

Step 2: Then multiply all the prime factors GCF(144, 420, 391) = 1.