Greatest Common Factor of 18, 90, 77, 178

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

• Greatest Common Factor of 18, 90, 77, 178 by common division method
• Greatest Common Factor of 18, 90, 77, 178 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 18

List of positive integer factors of 18 that divides 18 without a remainder.

1,2,3,6,9,18

Factors of 90

List of positive integer factors of 90 that divides 90 without a remainder.

1,2,3,5,6,9,10,15,18,30,45,90

Factors of 77

List of positive integer factors of 77 that divides 77 without a remainder.

1,7,11,77

Factors of 178

List of positive integer factors of 178 that divides 178 without a remainder.

1,2,89,178

Greatest Common Factor

We found the factors 18,90,77,178 . The biggest common factor number is the GCF number.
So the greatest common factor 18,90,77,178 is 1.

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

• GCF of 64, 10, 55, 498
• GCF of 83, 67, 82, 198
• GCF of 10, 64, 21, 812
• GCF of 55, 73, 57, 206
• GCF of 78, 18, 24, 816

1. What is the GCF of 18, 90, 77, 178?

Answer: GCF of 18, 90, 77, 178 is 1.

2. How to Find the GCF of 18, 90, 77, 178

Answer: Greatest Common Factor(GCF) of 18, 90, 77, 178 = 1

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

Step 2: Then multiply all the prime factors GCF(18, 90, 77, 178) = 1.