Greatest Common Factor of 42, 70, 29, 81

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

• Greatest Common Factor of 42, 70, 29, 81 by common division method
• Greatest Common Factor of 42, 70, 29, 81 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 70

List of positive integer factors of 70 that divides 70 without a remainder.

1,2,5,7,10,14,35,70

Factors of 29

List of positive integer factors of 29 that divides 29 without a remainder.

1,29

Factors of 81

List of positive integer factors of 81 that divides 81 without a remainder.

1,3,9,27,81

Greatest Common Factor

We found the factors 42,70,29,81 . The biggest common factor number is the GCF number.
So the greatest common factor 42,70,29,81 is 1.

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

• GCF of 25, 25, 81, 45
• GCF of 14, 42, 76, 14
• GCF of 50, 85, 46, 75
• GCF of 21, 69, 62, 18
• GCF of 14, 69, 45, 87

1. What is the GCF of 42, 70, 29, 81?

Answer: GCF of 42, 70, 29, 81 is 1.

2. How to Find the GCF of 42, 70, 29, 81

Answer: Greatest Common Factor(GCF) of 42, 70, 29, 81 = 1

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

Step 2: Then multiply all the prime factors GCF(42, 70, 29, 81) = 1.