Greatest Common Factor of 45, 78, 18, 845

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

• Greatest Common Factor of 45, 78, 18, 845 by common division method
• Greatest Common Factor of 45, 78, 18, 845 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 45

List of positive integer factors of 45 that divides 45 without a remainder.

1,3,5,9,15,45

Factors of 78

List of positive integer factors of 78 that divides 78 without a remainder.

1,2,3,6,13,26,39,78

Factors of 18

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

1,2,3,6,9,18

Factors of 845

List of positive integer factors of 845 that divides 845 without a remainder.

1,5,13,65,169,845

Greatest Common Factor

We found the factors 45,78,18,845 . The biggest common factor number is the GCF number.
So the greatest common factor 45,78,18,845 is 1.

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

• GCF of 28, 16, 81, 650
• GCF of 56, 65, 75, 148
• GCF of 41, 53, 79, 900
• GCF of 11, 35, 96, 422
• GCF of 35, 44, 58, 315

1. What is the GCF of 45, 78, 18, 845?

Answer: GCF of 45, 78, 18, 845 is 1.

2. How to Find the GCF of 45, 78, 18, 845

Answer: Greatest Common Factor(GCF) of 45, 78, 18, 845 = 1

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

Step 2: Then multiply all the prime factors GCF(45, 78, 18, 845) = 1.