Greatest Common Factor of 42, 12, 61, 278

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

• Greatest Common Factor of 42, 12, 61, 278 by common division method
• Greatest Common Factor of 42, 12, 61, 278 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 42

List of positive integer factors of 42 that divides 42 without a remainder.

1,2,3,6,7,14,21,42

Factors of 12

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

1,2,3,4,6,12

Factors of 61

List of positive integer factors of 61 that divides 61 without a remainder.

1,61

Factors of 278

List of positive integer factors of 278 that divides 278 without a remainder.

1,2,139,278

Greatest Common Factor

We found the factors 42,12,61,278 . The biggest common factor number is the GCF number.
So the greatest common factor 42,12,61,278 is 1.

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

• GCF of 48, 15, 21, 859
• GCF of 52, 98, 18, 713
• GCF of 52, 37, 91, 561
• GCF of 69, 98, 67, 520
• GCF of 30, 11, 31, 270

1. What is the GCF of 42, 12, 61, 278?

Answer: GCF of 42, 12, 61, 278 is 1.

2. How to Find the GCF of 42, 12, 61, 278

Answer: Greatest Common Factor(GCF) of 42, 12, 61, 278 = 1

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

Step 2: Then multiply all the prime factors GCF(42, 12, 61, 278) = 1.