Greatest Common Factor of 21, 51, 24, 900

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

• Greatest Common Factor of 21, 51, 24, 900 by common division method
• Greatest Common Factor of 21, 51, 24, 900 with matching the biggest common factor

Maximum 4 Number can be enter but you can reset

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

Factors of 21

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

1,3,7,21

Factors of 51

List of positive integer factors of 51 that divides 51 without a remainder.

1,3,17,51

Factors of 24

List of positive integer factors of 24 that divides 24 without a remainder.

1,2,3,4,6,8,12,24

Factors of 900

List of positive integer factors of 900 that divides 900 without a remainder.

1,2,3,4,5,6,9,10,12,15,18,20,25,30,36,45,50,60,75,90,100,150,180,225,300,450,900

Greatest Common Factor

We found the factors 21,51,24,900 . The biggest common factor number is the GCF number.
So the greatest common factor 21,51,24,900 is 3.

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

• GCF of 89, 74, 72, 237
• GCF of 55, 93, 31, 854
• GCF of 61, 52, 63, 666
• GCF of 31, 18, 34, 151
• GCF of 68, 65, 33, 692

1. What is the GCF of 21, 51, 24, 900?

Answer: GCF of 21, 51, 24, 900 is 3.

2. How to Find the GCF of 21, 51, 24, 900

Answer: Greatest Common Factor(GCF) of 21, 51, 24, 900 = 3

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

Step 2: Then multiply all the prime factors GCF(21, 51, 24, 900) = 3.