Greatest Common Factor of 42, 80, 81, 85, 92

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

• Greatest Common Factor of 42, 80, 81, 85, 92 by common division method
• Greatest Common Factor of 42, 80, 81, 85, 92 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 81

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

1,3,9,27,81

Factors of 85

List of positive integer factors of 85 that divides 85 without a remainder.

1,5,17,85

Factors of 92

List of positive integer factors of 92 that divides 92 without a remainder.

1,2,4,23,46,92

Greatest Common Factor

We found the factors 42,80,81,85,92 . The biggest common factor number is the GCF number.
So the greatest common factor 42,80,81,85,92 is 1.

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

• GCF of 94, 62, 42, 39, 75
• GCF of 25, 72, 18, 40, 63
• GCF of 17, 14, 93, 32, 11
• GCF of 33, 65, 30, 82, 42
• GCF of 26, 42, 82, 40, 42

1. What is the GCF of 42, 80, 81, 85, 92?

Answer: GCF of 42, 80, 81, 85, 92 is 1.

2. How to Find the GCF of 42, 80, 81, 85, 92

Answer: Greatest Common Factor(GCF) of 42, 80, 81, 85, 92 = 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, 81, 85, 92) = 1.