Greatest Common Factor of 421, 424, 420

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

• Greatest Common Factor of 421, 424, 420 by common division method
• Greatest Common Factor of 421, 424, 420 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 421

List of positive integer factors of 421 that divides 421 without a remainder.

1,421

Factors of 424

List of positive integer factors of 424 that divides 424 without a remainder.

1,2,4,8,53,106,212,424

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

Greatest Common Factor

We found the factors 421,424,420 . The biggest common factor number is the GCF number.
So the greatest common factor 421,424,420 is 1.

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

• GCF of 814, 713, 712
• GCF of 441, 483, 128
• GCF of 434, 998, 463
• GCF of 583, 577, 974
• GCF of 557, 255, 970

1. What is the GCF of 421, 424, 420?

Answer: GCF of 421, 424, 420 is 1.

2. How to Find the GCF of 421, 424, 420

Answer: Greatest Common Factor(GCF) of 421, 424, 420 = 1

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

Step 2: Then multiply all the prime factors GCF(421, 424, 420) = 1.