Greatest Common Factor of 78, 13, 47, 25, 665

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

• Greatest Common Factor of 78, 13, 47, 25, 665 by common division method
• Greatest Common Factor of 78, 13, 47, 25, 665 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 13

List of positive integer factors of 13 that divides 13 without a remainder.

1,13

Factors of 47

List of positive integer factors of 47 that divides 47 without a remainder.

1,47

Factors of 25

List of positive integer factors of 25 that divides 25 without a remainder.

1,5,25

Factors of 665

List of positive integer factors of 665 that divides 665 without a remainder.

1,5,7,19,35,95,133,665

Greatest Common Factor

We found the factors 78,13,47,25,665 . The biggest common factor number is the GCF number.
So the greatest common factor 78,13,47,25,665 is 1.

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

• GCF of 81, 26, 85, 93, 978
• GCF of 16, 39, 97, 15, 565
• GCF of 67, 35, 61, 18, 656
• GCF of 17, 70, 85, 66, 510
• GCF of 42, 22, 81, 78, 608

1. What is the GCF of 78, 13, 47, 25, 665?

Answer: GCF of 78, 13, 47, 25, 665 is 1.

2. How to Find the GCF of 78, 13, 47, 25, 665

Answer: Greatest Common Factor(GCF) of 78, 13, 47, 25, 665 = 1

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

Step 2: Then multiply all the prime factors GCF(78, 13, 47, 25, 665) = 1.