Greatest Common Factor of 12, 24, 78, 242

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

• Greatest Common Factor of 12, 24, 78, 242 by common division method
• Greatest Common Factor of 12, 24, 78, 242 with matching the biggest common factor

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∴ So the GCF of the given numbers is 2 = 2

Factors of 12

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

1,2,3,4,6,12

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 78

List of positive integer factors of 78 that divides 78 without a remainder.

1,2,3,6,13,26,39,78

Factors of 242

List of positive integer factors of 242 that divides 242 without a remainder.

1,2,11,22,121,242

Greatest Common Factor

We found the factors 12,24,78,242 . The biggest common factor number is the GCF number.
So the greatest common factor 12,24,78,242 is 2.

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

• GCF of 39, 85, 90, 205
• GCF of 44, 43, 44, 851
• GCF of 57, 20, 94, 486
• GCF of 44, 58, 26, 328
• GCF of 12, 17, 22, 285

1. What is the GCF of 12, 24, 78, 242?

Answer: GCF of 12, 24, 78, 242 is 2.

2. How to Find the GCF of 12, 24, 78, 242

Answer: Greatest Common Factor(GCF) of 12, 24, 78, 242 = 2

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

Step 2: Then multiply all the prime factors GCF(12, 24, 78, 242) = 2.