Greatest Common Factor of 72, 55, 21, 424

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

• Greatest Common Factor of 72, 55, 21, 424 by common division method
• Greatest Common Factor of 72, 55, 21, 424 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 72

List of positive integer factors of 72 that divides 72 without a remainder.

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

Factors of 55

List of positive integer factors of 55 that divides 55 without a remainder.

1,5,11,55

Factors of 21

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

1,3,7,21

Factors of 424

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

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

Greatest Common Factor

We found the factors 72,55,21,424 . The biggest common factor number is the GCF number.
So the greatest common factor 72,55,21,424 is 1.

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

• GCF of 98, 56, 15, 490
• GCF of 66, 18, 21, 553
• GCF of 88, 63, 53, 752
• GCF of 22, 45, 54, 606
• GCF of 62, 34, 55, 635

1. What is the GCF of 72, 55, 21, 424?

Answer: GCF of 72, 55, 21, 424 is 1.

2. How to Find the GCF of 72, 55, 21, 424

Answer: Greatest Common Factor(GCF) of 72, 55, 21, 424 = 1

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

Step 2: Then multiply all the prime factors GCF(72, 55, 21, 424) = 1.