Greatest Common Factor of 21, 75, 30, 606

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

• Greatest Common Factor of 21, 75, 30, 606 by common division method
• Greatest Common Factor of 21, 75, 30, 606 with matching the biggest common factor

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∴ 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 75

List of positive integer factors of 75 that divides 75 without a remainder.

1,3,5,15,25,75

Factors of 30

List of positive integer factors of 30 that divides 30 without a remainder.

1,2,3,5,6,10,15,30

Factors of 606

List of positive integer factors of 606 that divides 606 without a remainder.

1,2,3,6,101,202,303,606

Greatest Common Factor

We found the factors 21,75,30,606 . The biggest common factor number is the GCF number.
So the greatest common factor 21,75,30,606 is 3.

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

• GCF of 79, 47, 11, 243
• GCF of 55, 47, 32, 566
• GCF of 75, 55, 11, 668
• GCF of 61, 93, 31, 874
• GCF of 79, 73, 97, 226

1. What is the GCF of 21, 75, 30, 606?

Answer: GCF of 21, 75, 30, 606 is 3.

2. How to Find the GCF of 21, 75, 30, 606

Answer: Greatest Common Factor(GCF) of 21, 75, 30, 606 = 3

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

Step 2: Then multiply all the prime factors GCF(21, 75, 30, 606) = 3.