Greatest Common Factor of 12, 30, 420

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

• Greatest Common Factor of 12, 30, 420 by common division method
• Greatest Common Factor of 12, 30, 420 with matching the biggest common factor

Maximum 4 Number can be enter but you can reset

∴ So the GCF of the given numbers is 2 x 3 = 6

Factors of 12

List of positive integer factors of 12 that divides 12 without a remainder.

1,2,3,4,6,12

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 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 12,30,420 . The biggest common factor number is the GCF number.
So the greatest common factor 12,30,420 is 6.

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

• GCF of 35, 54, 676
• GCF of 17, 56, 573
• GCF of 93, 24, 291
• GCF of 12, 15, 176
• GCF of 50, 44, 238

1. What is the GCF of 12, 30, 420?

Answer: GCF of 12, 30, 420 is 6.

2. How to Find the GCF of 12, 30, 420

Answer: Greatest Common Factor(GCF) of 12, 30, 420 = 6

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

Step 2: Then multiply all the prime factors GCF(12, 30, 420) = 6.