Greatest Common Factor of 78, 28, 15, 524

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

• Greatest Common Factor of 78, 28, 15, 524 by common division method
• Greatest Common Factor of 78, 28, 15, 524 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 28

List of positive integer factors of 28 that divides 28 without a remainder.

1,2,4,7,14,28

Factors of 15

List of positive integer factors of 15 that divides 15 without a remainder.

1,3,5,15

Factors of 524

List of positive integer factors of 524 that divides 524 without a remainder.

1,2,4,131,262,524

Greatest Common Factor

We found the factors 78,28,15,524 . The biggest common factor number is the GCF number.
So the greatest common factor 78,28,15,524 is 1.

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

• GCF of 15, 53, 65, 685
• GCF of 18, 32, 33, 597
• GCF of 91, 79, 59, 629
• GCF of 46, 22, 63, 230
• GCF of 43, 76, 89, 933

1. What is the GCF of 78, 28, 15, 524?

Answer: GCF of 78, 28, 15, 524 is 1.

2. How to Find the GCF of 78, 28, 15, 524

Answer: Greatest Common Factor(GCF) of 78, 28, 15, 524 = 1

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

Step 2: Then multiply all the prime factors GCF(78, 28, 15, 524) = 1.