Greatest Common Factor of 78, 66, 87, 980

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

• Greatest Common Factor of 78, 66, 87, 980 by common division method
• Greatest Common Factor of 78, 66, 87, 980 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 66

List of positive integer factors of 66 that divides 66 without a remainder.

1,2,3,6,11,22,33,66

Factors of 87

List of positive integer factors of 87 that divides 87 without a remainder.

1,3,29,87

Factors of 980

List of positive integer factors of 980 that divides 980 without a remainder.

1,2,4,5,7,10,14,20,28,35,49,70,98,140,196,245,490,980

Greatest Common Factor

We found the factors 78,66,87,980 . The biggest common factor number is the GCF number.
So the greatest common factor 78,66,87,980 is 1.

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

• GCF of 91, 38, 18, 451
• GCF of 62, 56, 50, 480
• GCF of 30, 61, 80, 448
• GCF of 85, 81, 40, 611
• GCF of 26, 73, 64, 513

1. What is the GCF of 78, 66, 87, 980?

Answer: GCF of 78, 66, 87, 980 is 1.

2. How to Find the GCF of 78, 66, 87, 980

Answer: Greatest Common Factor(GCF) of 78, 66, 87, 980 = 1

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

Step 2: Then multiply all the prime factors GCF(78, 66, 87, 980) = 1.