Greatest Common Factor of 42, 30, 71, 238

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

• Greatest Common Factor of 42, 30, 71, 238 by common division method
• Greatest Common Factor of 42, 30, 71, 238 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 30

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

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

Factors of 71

List of positive integer factors of 71 that divides 71 without a remainder.

1,71

Factors of 238

List of positive integer factors of 238 that divides 238 without a remainder.

1,2,7,14,17,34,119,238

Greatest Common Factor

We found the factors 42,30,71,238 . The biggest common factor number is the GCF number.
So the greatest common factor 42,30,71,238 is 1.

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

• GCF of 44, 65, 51, 402
• GCF of 69, 36, 40, 281
• GCF of 32, 10, 69, 819
• GCF of 65, 64, 46, 125
• GCF of 17, 27, 13, 102

1. What is the GCF of 42, 30, 71, 238?

Answer: GCF of 42, 30, 71, 238 is 1.

2. How to Find the GCF of 42, 30, 71, 238

Answer: Greatest Common Factor(GCF) of 42, 30, 71, 238 = 1

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

Step 2: Then multiply all the prime factors GCF(42, 30, 71, 238) = 1.