Greatest Common Factor of 42, 80, 155

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

• Greatest Common Factor of 42, 80, 155 by common division method
• Greatest Common Factor of 42, 80, 155 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 80

List of positive integer factors of 80 that divides 80 without a remainder.

1,2,4,5,8,10,16,20,40,80

Factors of 155

List of positive integer factors of 155 that divides 155 without a remainder.

1,5,31,155

Greatest Common Factor

We found the factors 42,80,155 . The biggest common factor number is the GCF number.
So the greatest common factor 42,80,155 is 1.

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

• GCF of 94, 17, 747
• GCF of 42, 29, 246
• GCF of 93, 90, 649
• GCF of 58, 91, 697
• GCF of 47, 63, 300

1. What is the GCF of 42, 80, 155?

Answer: GCF of 42, 80, 155 is 1.

2. How to Find the GCF of 42, 80, 155

Answer: Greatest Common Factor(GCF) of 42, 80, 155 = 1

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

Step 2: Then multiply all the prime factors GCF(42, 80, 155) = 1.