Greatest Common Factor of 78, 42, 83, 25

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

• Greatest Common Factor of 78, 42, 83, 25 by common division method
• Greatest Common Factor of 78, 42, 83, 25 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 42

List of positive integer factors of 42 that divides 42 without a remainder.

1,2,3,6,7,14,21,42

Factors of 83

List of positive integer factors of 83 that divides 83 without a remainder.

1,83

Factors of 25

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

1,5,25

Greatest Common Factor

We found the factors 78,42,83,25 . The biggest common factor number is the GCF number.
So the greatest common factor 78,42,83,25 is 1.

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

• GCF of 67, 71, 34, 57
• GCF of 14, 66, 80, 60
• GCF of 55, 83, 35, 97
• GCF of 49, 18, 34, 25
• GCF of 73, 16, 61, 63

1. What is the GCF of 78, 42, 83, 25?

Answer: GCF of 78, 42, 83, 25 is 1.

2. How to Find the GCF of 78, 42, 83, 25

Answer: Greatest Common Factor(GCF) of 78, 42, 83, 25 = 1

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

Step 2: Then multiply all the prime factors GCF(78, 42, 83, 25) = 1.