Greatest Common Factor of 85, 78, 30, 98

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

• Greatest Common Factor of 85, 78, 30, 98 by common division method
• Greatest Common Factor of 85, 78, 30, 98 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 85

List of positive integer factors of 85 that divides 85 without a remainder.

1,5,17,85

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 30

List of positive integer factors of 30 that divides 30 without a remainder.

1,2,3,5,6,10,15,30

Factors of 98

List of positive integer factors of 98 that divides 98 without a remainder.

1,2,7,14,49,98

Greatest Common Factor

We found the factors 85,78,30,98 . The biggest common factor number is the GCF number.
So the greatest common factor 85,78,30,98 is 1.

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

• GCF of 36, 58, 45, 48
• GCF of 75, 30, 27, 25
• GCF of 81, 97, 14, 43
• GCF of 49, 72, 19, 49
• GCF of 76, 59, 82, 86

1. What is the GCF of 85, 78, 30, 98?

Answer: GCF of 85, 78, 30, 98 is 1.

2. How to Find the GCF of 85, 78, 30, 98

Answer: Greatest Common Factor(GCF) of 85, 78, 30, 98 = 1

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

Step 2: Then multiply all the prime factors GCF(85, 78, 30, 98) = 1.