Greatest Common Factor of 78, 17, 440

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

• Greatest Common Factor of 78, 17, 440 by common division method
• Greatest Common Factor of 78, 17, 440 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 78

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

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

Factors of 17

List of positive integer factors of 17 that divides 17 without a remainder.

1,17

Factors of 440

List of positive integer factors of 440 that divides 440 without a remainder.

1,2,4,5,8,10,11,20,22,40,44,55,88,110,220,440

Greatest Common Factor

We found the factors 78,17,440 . The biggest common factor number is the GCF number.
So the greatest common factor 78,17,440 is 1.

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

• GCF of 17, 81, 516
• GCF of 35, 13, 284
• GCF of 97, 14, 509
• GCF of 70, 81, 182
• GCF of 29, 57, 403

1. What is the GCF of 78, 17, 440?

Answer: GCF of 78, 17, 440 is 1.

2. How to Find the GCF of 78, 17, 440

Answer: Greatest Common Factor(GCF) of 78, 17, 440 = 1

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

Step 2: Then multiply all the prime factors GCF(78, 17, 440) = 1.